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1.
Radiol Case Rep ; 17(12): 4685-4689, 2022 Dec.
Article in English | MEDLINE | ID: mdl-36204416

ABSTRACT

Spermatic cord abscess is a rare condition usually associated with other genitourinary infections. We present a case of a 49-year-old male with past medical history of uncontrolled diabetes mellitus. He presented with right groin swelling and pain for a week. Ultrasound showed a tubular hyperemic structure extending into the scrotal sac. Computed tomography showed concurrent perinephric abscess and right spermatic cord abscess. The spermatic cord abscess was managed surgically by incision and drainage. To our knowledge, this is the first case report of a patient with spermatic cord abscess and concurrent perinephric abscess. We highlight the clinical importance of familiarity with such a rare condition and the role of imaging in establishing the correct diagnosis while excluding close differentials.

2.
Med Phys ; 49(8): 5216-5224, 2022 Aug.
Article in English | MEDLINE | ID: mdl-35533237

ABSTRACT

PURPOSE: Dose escalation to dominant intraprostatic lesions (DILs) is a novel treatment strategy to improve the treatment outcome of prostate radiation therapy. Treatment planning requires accurate and fast delineation of the prostate and DILs. In this study, a 3D cascaded scoring convolutional neural network is proposed to automatically segment the prostate and DILs from MRI. METHODS AND MATERIALS: The proposed cascaded scoring convolutional neural network performs end-to-end segmentation by locating a region-of-interest (ROI), identifying the object within the ROI, and defining the target. A scoring strategy, which is learned to judge the segmentation quality of DIL, is integrated into cascaded convolutional neural network to solve the challenge of segmenting the irregular shapes of the DIL. To evaluate the proposed method, 77 patients who underwent MRI and PET/CT were retrospectively investigated. The prostate and DIL ground truth contours were delineated by experienced radiologists. The proposed method was evaluated with fivefold cross-validation and holdout testing. RESULTS: The average centroid distance, volume difference, and Dice similarity coefficient (DSC) value for prostate/DIL are 4.3 ± 7.5/3.73 ± 3.78 mm, 4.5 ± 7.9/0.41 ± 0.59 cc, and 89.6 ± 8.9/84.3 ± 11.9%, respectively. Comparable results were obtained in the holdout test. Similar or superior segmentation outcomes were seen when compared the results of the proposed method to those of competing segmentation approaches. CONCLUSIONS: The proposed automatic segmentation method can accurately and simultaneously segment both the prostate and DILs. The intended future use for this algorithm is focal boost prostate radiation therapy.


Subject(s)
Positron Emission Tomography Computed Tomography , Prostate , Humans , Image Processing, Computer-Assisted/methods , Magnetic Resonance Imaging/methods , Male , Neural Networks, Computer , Prostate/diagnostic imaging , Retrospective Studies
3.
J Obstet Gynaecol ; 42(5): 1198-1203, 2022 Jul.
Article in English | MEDLINE | ID: mdl-34379544

ABSTRACT

This study aimed to explore the effect of infertility on self-esteem and depression, and to identify the sociodemographic and infertility characteristics associated with self-esteem and depression among infertile women in Ekiti State, Nigeria. Self-esteem and depression were assessed in 100 infertile women and 100 women seeking family planning (controls) using the Rosenberg Self-Esteem Scale (RSES) and Patient Health Questionnaire (PHQ-9), respectively. Infertile women had significantly lower RSES score (19.4 ± 4.5 vs. 20.7 ± 4.4, p=.038) and higher PHQ-9 score (5.1 ± 4.1 vs. 3.8 ± 3.5, p=.023) compared to controls. Among infertile women, marital status, being remarried, duration of infertility, and RSES score were associated with PHQ-9 score on simple linear regression. On multiple linear regression analysis, the RSES score had a negative association with the PHQ-9 score (ß= -0.32, p<.001). In conclusion, infertile women have lower self-esteem and higher depression scores. Mental health screening and management should be an integral part of care administered to infertile women.Impact StatementWhat is already known on this subject? Infertility is a global health problem with negative effects on the mental health and quality of life of couples, especially women.What the results of this study add? Infertile women have lower self-esteem and higher depression scores. The prevalence of major depressive disorder (MDD) is higher among infertile women. Longer duration of infertility, older age, ≤6 years of formal education, and low self-esteem are significant associations of MDD among infertile women.What the implications are of these findings for clinical practice and/or further research? Mental health screening and management should be included in the care given to women undergoing evaluation and treatment for infertility. Larger community-based studies evaluating other aspects of mental health among infertile couples are encouraged.


Subject(s)
Depressive Disorder, Major , Infertility, Female , Depression/epidemiology , Female , Humans , Infertility, Female/epidemiology , Infertility, Female/psychology , Quality of Life/psychology , Self Concept
4.
Phys Med Biol ; 66(24)2021 12 07.
Article in English | MEDLINE | ID: mdl-34808603

ABSTRACT

Focal boost to dominant intraprostatic lesions (DILs) has recently been proposed for prostate radiation therapy. Accurate and fast delineation of the prostate and DILs is thus required during treatment planning. In this paper, we develop a learning-based method using positron emission tomography (PET)/computed tomography (CT) images to automatically segment the prostate and its DILs. To enable end-to-end segmentation, a deep learning-based method, called cascaded regional-Net, is utilized. The first network, referred to as dual attention network, is used to segment the prostate via extracting comprehensive features from both PET and CT images. A second network, referred to as mask scoring regional convolutional neural network (MSR-CNN), is used to segment the DILs from the PET and CT within the prostate region. Scoring strategy is used to diminish the misclassification of the DILs. For DIL segmentation, the proposed cascaded regional-Net uses two steps to remove normal tissue regions, with the first step cropping images based on prostate segmentation and the second step using MSR-CNN to further locate the DILs. The binary masks of DILs and prostates of testing patients are generated on the PET/CT images by the trained model. For evaluation, we retrospectively investigated 49 prostate cancer patients with PET/CT images acquired. The prostate and DILs of each patient were contoured by radiation oncologists and set as the ground truths and targets. We used five-fold cross-validation and a hold-out test to train and evaluate our method. The mean surface distance and DSC values were 0.666 ± 0.696 mm and 0.932 ± 0.059 for the prostate and 0.814 ± 1.002 mm and 0.801 ± 0.178 for the DILs among all 49 patients. The proposed method has shown promise for facilitating prostate and DIL delineation for DIL focal boost prostate radiation therapy.


Subject(s)
Prostate , Prostatic Neoplasms , Humans , Image Processing, Computer-Assisted , Male , Pelvis/pathology , Positron Emission Tomography Computed Tomography/methods , Prostate/diagnostic imaging , Prostate/pathology , Prostatic Neoplasms/diagnostic imaging , Prostatic Neoplasms/pathology , Prostatic Neoplasms/radiotherapy , Retrospective Studies
5.
Am J Nucl Med Mol Imaging ; 11(3): 218-229, 2021.
Article in English | MEDLINE | ID: mdl-34235000

ABSTRACT

Monitoring therapeutic response in patients with metastatic castration-resistant prostate cancer (mCRPC) can be challenging. We set out to determine if 18F-fluciclovine PET/CT could be a useful imaging biomarker for response to docetaxel chemotherapy in patients with mCRPC. Seven patients with mCRPC had 18F-fluciclovine PET/CT scheduled at baseline and after 1 and 6 cycles of chemotherapy. The sum of SUVmax from the prostate/bed and up to 5 metastatic bone and soft tissue/visceral lesions were recorded. The SUVpeak of the hottest lesion (PERCIST-like) was also recorded. In comparison to the baseline scan, a decrease of ≥30% was considered response; new lesions or >30% increase was progressive disease; change of <30% was stable disease. Bone scintigraphy and CT were acquired at baseline and after the 6th cycle. Response assessment was based on the Prostate Cancer Clinical Trial Working Group 3 recommendations. All (7/7) enrolled patients completed the 1st and 2nd scans, while 4/7 patients completed all 3 scans. PET response correlated with PSA response in 3/7 (42.9%) patients after 1 cycle of docetaxel, and 3/4 (75%) patients after 6 cycles of docetaxel, respectively. Bone scan and CT correlated with PSA response in 1/4 (25%) patients. There was no significant correlation between baseline 18F-fluciclovine PET parameters or changes in PET parameters and time to PSA progression. In conclusion, this exploratory study showed that 18F-fluciclovine PET/CT has better correlation with PSA response than CT or bone scan in patients with mCRPC treated with docetaxel. 18F-fluciclovine PET/CT however did not predict time to PSA progression.

6.
J Obstet Gynaecol India ; 71(2): 173-180, 2021 Apr.
Article in English | MEDLINE | ID: mdl-34149220

ABSTRACT

BACKGROUND/PURPOSE: There is an increasing trend in the utilization of long-acting reversible contraceptive (LARC) methods globally. The study assessed the utilization of LARC methods and its determinants in a tertiary hospital, southwestern Nigeria using a mixed method study. METHODS: A cross-sectional study of women attending the Family Planning Clinic of the tertiary hospital was conducted between November 1, 2018 and October 31, 2019 using both quantitative and qualitative methods. Quantitative data was collected using structured questionnaire while in-depth interviewer topic guide was used to obtain qualitative data from the respondents. The quantitative and qualitative data obtained from the respondents were analyzed using SPSS version 22 and open code version 3.6.2, respectively, and the determinants of utilization of LARC methods were identified using multivariate regression model. RESULTS: The current utilization rate of LARC methods was 65.6% and implants accounted for 75% of LARC used. Higher education (p = 0.035), more than 3 living children (p = 0.030), previous use of LARC (p = 0.028), good knowledge (p = 0.025) and positive attitude of the women about LARC (p = 0.026) were significant determinants of utilization among the women. Limiting size of family was the commonest reason among LARC users, while partner disapproval, fear of procedure and side effects were reasons given by non-users. CONCLUSIONS: The utilization rate of LARC methods are high, and this should be sustained through improved information dissemination, education of women and involvement of male partners in reproductive health matters including family planning.

7.
J Cardiol Cases ; 24(5): 206-209, 2021 Nov.
Article in English | MEDLINE | ID: mdl-34178185

ABSTRACT

Peripartum cardiomyopathy is a relatively rare condition, that usually presents with features of heart failure in the peripartum period. The ongoing pandemic caused by coronavirus disease 2019 (COVID-19) has been reported to be associated with myocarditis, with progression to dilated cardiomyopathy and heart failure. Dilated cardiomyopathy in a peripartum patient with COVID-19 infection may present a diagnostic dilemma. We report a case of dilated cardiomyopathy in a peripartum patient with COVID-19 infection. She presented with shortness of breath in the peripartum period. Chest X-ray showed a grossly enlarged heart with bilateral pulmonary infiltrates consistent with congestive heart failure or viral pneumonia. Echocardiography revealed dilated chambers with 22% left ventricular ejection fraction (LVEF) and global hypokinesis. Despite completing 5 days of remdesivir and dexamethasone, she had worsening dyspnea on postpartum day 10, a repeat echocardiogram showed further reduction in LVEF to 10-15% and was discharged with a life-vest after acute management. She had multiple hospital admissions for decompensated heart failure. Myocardial core biopsy showed marked acute inflammation and necrosis. She had an intra-aortic balloon pump, left ventricular and right ventricular assist devices placed on account of persistent hemodynamic instability, and is now scheduled to have a cardiac transplant. .

8.
Lancet ; 397(10288): 1895-1904, 2021 05 22.
Article in English | MEDLINE | ID: mdl-33971152

ABSTRACT

BACKGROUND: Molecular imaging is increasingly used to guide treatment decisions and planning in prostate cancer. We aimed to evaluate the role of 18F-fluciclovine-PET/CT in improving cancer control compared with conventional imaging (bone scan and either CT or MRI) alone for salvage postprostatectomy radiotherapy. METHODS: In EMPIRE-1, a single-centre, open-label, phase 2/3 randomised controlled trial, patients with prostate cancer with detectable PSA after prostatectomy and negative conventional imaging (no extrapelvic or bone findings) were randomly assigned in a 1:1 ratio to radiotherapy directed by conventional imaging alone or to conventional imaging plus 18F-fluciclovine-PET/CT. Computer-generated randomisation was stratified by PSA concentration, adverse pathology indicators, and androgen deprivation therapy intent. In the 18F-fluciclovine-PET/CT group, radiotherapy decisions were rigidly determined by PET findings, which were also used for target delineation. The primary endpoint was 3 year event-free survival, with events defined as biochemical or clinical recurrence or progression, or initiation of systemic therapy, using univariate and multivariable analyses in patients who received radiotherapy. This trial is registered with ClinicalTrials.gov, NCT01666808 and is closed to new participants. FINDINGS: From Sept 18, 2012, to March 4, 2019, 165 patients were randomly assigned, with median follow-up of 3·52 years (95% CI 2·98-3·95). PET findings resulted in four patients in the 18F-fluciclovine-PET/CT group having radiotherapy aborted; these patients were excluded from survival analyses. Median survival was not reached (95% CI 35·2-not reached; 33% of 81 patients had events) in the conventional imaging group compared with not reached (95% CI not reached-not reached; 20% of 76 patients) in the 18F-fluciclovine-PET/CT group, and 3 year event-free survival was 63·0% (95% CI 49·2-74·0) in the conventional imaging group versus 75·5% (95% CI 62·5-84·6) for 18F-fluciclovine-PET/CT (difference 12·5; 95% CI 4·3-20·8; p=0·0028). In adjusted analyses, study group (hazard ratio 2·04 [95% CI 1·06-3·93], p=0·0327) was significantly associated with event-free survival. Toxicity was similar in both study groups, with the most common adverse events being late urinary frequency or urgency (37 [46%] of 81 patients in the conventional imaging group and 31 [41%] of 76 in the PET group), and acute diarrhoea (11 [14%] in the conventional imaging group and 16 [21%] in the PET group). INTERPRETATION: Inclusion of 18F-fluciclovine-PET into postprostatectomy radiotherapy decision making and planning significantly improved survival free from biochemical recurrence or persistence. Integration of novel PET radiotracers into radiotherapy decisions and planning for prostate cancer patients warrants further study. FUNDING: National Institutes of Health/National Cancer Institute, Blue Earth Diagnostics, and Winship Cancer Institute of Emory University.


Subject(s)
Positron Emission Tomography Computed Tomography , Prostatectomy/methods , Prostatic Neoplasms/radiotherapy , Prostatic Neoplasms/surgery , Radiography, Interventional/methods , Salvage Therapy/methods , Adenocarcinoma/radiotherapy , Adenocarcinoma/surgery , Aged , Carboxylic Acids , Cyclobutanes , Humans , Magnetic Resonance Imaging , Male , Middle Aged
9.
J Nucl Med ; 62(8): 1089-1096, 2021 08 01.
Article in English | MEDLINE | ID: mdl-33517323

ABSTRACT

Imaging with novel PET radiotracers has significantly influenced radiotherapy decision making and radiation planning in patients with recurrent prostate cancer (PCa). The purpose of this analysis was to report the final results for management decision changes based on 18F-fluciclovine PET/CT findings and determine whether the decision change trend remained after completion of accrual. Methods: Patients with detectable prostate-specific antigen (PSA) after prostatectomy were randomized to undergo either conventional imaging (CI) only (arm A) or CI plus 18F-fluciclovine PET/CT (arm B) before radiotherapy. In arm B, positivity rates on CI and 18F-fluciclovine PET/CT for detection of recurrent PCa were determined. Final decisions on whether to offer radiotherapy and whether to include only the prostate bed or also the pelvis in the radiotherapy field were based on 18F-fluciclovine PET/CT findings. Radiotherapy decisions before and after 18F-fluciclovine PET/CT were compared. The statistical significance of decision changes was determined using the Clopper-Pearson (exact) binomial method. Prognostic factors were compared between patients with and without decision changes. Results: All 165 patients enrolled in the study had standard-of-care CI and were initially planned to receive radiotherapy. Sixty-three of 79 (79.7%) patients (median PSA, 0.33 ng/mL) who underwent 18F-fluciclovine PET/CT (arm B) had positive findings. 18F-Fluciclovine PET/CT had a significantly higher positivity rate than CI did for the whole body (79.7% vs. 13.9%; P < 0.001), prostate bed (69.6% vs. 5.1%; P < 0.001), and pelvic lymph nodes (38.0% vs. 10.1%; P < 0.001). Twenty-eight of 79 (35.4%) patients had the overall radiotherapy decision changed after 18F-fluciclovine PET/CT; in 4 of 79 (5.1%), the decision to use radiotherapy was withdrawn because of extrapelvic disease detected on 18F-fluciclovine PET/CT. In 24 of 75 (32.0%) patients with a final decision to undergo radiotherapy, the radiotherapy field was changed. Changes in overall radiotherapy decisions and radiotherapy fields were statistically significant (P < 0.001). Overall, the mean PSA at PET was significantly different between patients with and without radiotherapy decision changes (P = 0.033). Conclusion:18F-Fluciclovine PET/CT significantly altered salvage radiotherapy decisions in patients with recurrent PCa after prostatectomy. Further analysis to determine the impact of 18F-fluciclovine PET/CT guidance on clinical outcomes after radiotherapy is in progress.


Subject(s)
Positron Emission Tomography Computed Tomography , Prostatic Neoplasms , Aged , Carboxylic Acids , Cyclobutanes , Humans , Male , Middle Aged
10.
Clin Nucl Med ; 46(5): e282-e285, 2021 May 01.
Article in English | MEDLINE | ID: mdl-33208627

ABSTRACT

ABSTRACT: 18F-Fluciclovine is an amino acid-based radiopharmaceutical used primarily for PET imaging of patients with biochemical recurrence of prostate cancer. We report a case of a 66-year-old man with recently diagnosed metastatic castrate-resistant prostate cancer and a left supraclavicular lymph node with incidental radiotracer uptake on 18F-fluciclovine PET/CT. Left neck core needle biopsy confirmed high-grade, poorly differentiated carcinoma with neuroendocrine features positive for synaptophysin and chromogranin, and negative for prostate markers.


Subject(s)
Carboxylic Acids/metabolism , Cyclobutanes/metabolism , Neuroendocrine Tumors/metabolism , Neuroendocrine Tumors/secondary , Positron Emission Tomography Computed Tomography , Prostatic Neoplasms, Castration-Resistant/pathology , Aged , Biological Transport , Humans , Male , Neuroendocrine Tumors/diagnostic imaging , Neuroendocrine Tumors/pathology
11.
Clin Nucl Med ; 45(12): e525-e527, 2020 Dec.
Article in English | MEDLINE | ID: mdl-32701811

ABSTRACT

F-fluciclovine is a PET radiotracer approved for detection of recurrent prostate cancer, with utility in other malignancies being investigated. We present the case of a 71-year-old man with high-risk primary prostate cancer (Gleason score 9, prostate-specific antigen 34 ng/mL) and newly diagnosed lung adenocarcinoma. As part of a clinical trial (NCT03081884), preoperative F-fluciclovine PET/CT showed localized abnormal uptake in the prostate gland with extracapsular extension. Additionally, an incidental anterior mediastinal mass measuring 2.2 × 1.8 cm demonstrated abnormal radiotracer uptake. Biopsy of the mediastinal mass confirmed invasive lung adenocarcinoma with solid and acinar patterns and high programmed death 1 ligand expression.


Subject(s)
Adenocarcinoma of Lung/diagnostic imaging , Carboxylic Acids , Cyclobutanes , Incidental Findings , Mediastinum/pathology , Positron Emission Tomography Computed Tomography , Prostatic Neoplasms/diagnostic imaging , Adenocarcinoma of Lung/pathology , Aged , Biopsy , Humans , Male
12.
Int J Gynaecol Obstet ; 151(2): 209-213, 2020 Nov.
Article in English | MEDLINE | ID: mdl-32640073

ABSTRACT

OBJECTIVE: To evaluate use of second-trimester uterine artery Doppler velocimetry to predict adverse pregnancy outcomes. METHODS: A prospective longitudinal study among low-risk nulliparous women with singleton pregnancies attending Ekiti State University Teaching Hospital, Nigeria, between July and December 2017. Uterine artery Doppler indices were measured at 22-26 gestational weeks. Resistance index (RI) of 0.58 or less and pulsatility index (PI) of 1.6 or less were considered normal. The ability of Doppler indices to predict adverse pregnancy outcomes was determined. RESULTS: Among 120 women, 73 (60.8%) women had at least one abnormal Doppler index and 50 (41.7%) at least one adverse pregnancy outcome. For pre-eclampsia, sensitivity and specificity of RI were 40.0% and 37.3% (area under curve [AUC], 0.28), and those of PI were 20.0% and 89.1% (AUC, 0.33) respectively. For intrauterine growth restriction, sensitivity and specificity of RI were 23.1% and 34.6% (AUC, 0.22), and those of PI were 0% and 86.95% (AUC, 0.48), respectively. For low birthweight, sensitivity and specificity of RI were 60.0% and 38.9% (AUC, 0.54), and those of PI were 20.0% and 90.5% (AUC, 0.55), respectively. CONCLUSION: Late second-trimester uterine artery Doppler velocimetry had limited ability to predict adverse pregnancy outcomes in a low-risk population.


Subject(s)
Fetal Growth Retardation/diagnosis , Infant, Small for Gestational Age , Pre-Eclampsia/diagnosis , Ultrasonography, Prenatal , Uterine Artery/diagnostic imaging , Adult , Female , Fetal Growth Retardation/diagnostic imaging , Fetal Growth Retardation/etiology , Humans , Infant, Newborn , Longitudinal Studies , Nigeria , Pre-Eclampsia/diagnostic imaging , Pre-Eclampsia/etiology , Predictive Value of Tests , Pregnancy , Pregnancy Outcome , Pregnancy Trimester, Second , Prospective Studies , Sensitivity and Specificity , Young Adult
13.
J Urol ; 204(4): 734-740, 2020 10.
Article in English | MEDLINE | ID: mdl-32347780

ABSTRACT

PURPOSE: Accurate preoperative staging of prostate cancer is essential for treatment planning. Conventional imaging is limited in detection of metastases. Our primary aim was to determine if [18F]fluciclovine positron emission tomography/computerized tomography is an early indicator of subclinical metastasis among patients with high risk prostate cancer. MATERIALS AND METHODS: A total of 68 patients with unfavorable intermediate to very high risk prostate cancer without systemic disease on conventional imaging were recruited before robotic radical prostatectomy with extended pelvic lymph node dissection. Diagnostic performance of [18F]fluciclovine positron emission tomography/computerized tomography and conventional imaging for detection of metastatic disease, and correlation of positivity to node and metastatic deposit size were determined. RESULTS: Overall 57 of 68 patients completed the protocol, of whom 31 had nodal metastasis on histology. [18F]Fluciclovine positron emission tomography/computerized tomography sensitivity and specificity in detecting nodal metastasis was 55.3% and 84.8% per patient, and 54.8% and 96.4% per region (right and left pelvis, presacral and nonregional), respectively. Compared with conventional imaging [18F]Fluciclovine positron emission tomography/computerized tomography had significantly higher sensitivity on patient based (55.3% vs 33.3%, p <0.01) and region based (54.8% vs 19.4%, p <0.01) analysis, detecting metastasis in 7 more patients and 22 more regions, with similar high specificity. Four additional patients had distant disease or other cancer detected on [18F] fluciclovine positron emission tomography/computerized tomography which precluded surgery. Detection of metastasis was related to size of metastatic deposits within lymph nodes and overall metastatic burden. CONCLUSIONS: [18F]Fluciclovine positron emission tomography/computerized tomography detects occult metastases not identified on conventional imaging and may help guide treatment decisions and lymph node dissection due to high specificity for metastatic disease.


Subject(s)
Carboxylic Acids , Cyclobutanes , Positron Emission Tomography Computed Tomography , Prostatic Neoplasms/diagnostic imaging , Prostatic Neoplasms/pathology , Aged , Humans , Male , Middle Aged , Neoplasm Metastasis , Neoplasm Staging , Positron Emission Tomography Computed Tomography/methods , Preoperative Period , Prospective Studies , Prostatic Neoplasms/surgery
14.
J Nucl Med ; 60(11): 1531-1536, 2019 11.
Article in English | MEDLINE | ID: mdl-30954940

ABSTRACT

We evaluated 18F-fluciclovine uptake parameters that correlate with true positivity for local recurrence in non-prostatectomy-treated patients. Methods: Twenty-one patients (prostate-specific antigen level, 7.4 ± 6.8 ng/mL) with biochemical recurrence after nonprostatectomy local therapy (radiotherapy and cryotherapy) underwent dual-time-point 18F-fluciclovine (364.1 ± 37.7 MBq) PET/CT from pelvis to diaphragm. Prostatic uptake over background was delineated and coregistered to a prostate-biopsy-planning ultrasound. Transrectal biopsies of 18F-fluciclovine-defined targets were completed using a 3-dimensional visualization and navigation platform. Histologic analyses of lesions were completed. Lesion characteristics including SUVmax, target-to-background ratio (TBR), uptake pattern, and subjective reader's suspicion level were compared between true-positive (malignant) and false-positive (benign) lesions. Univariate analysis was used to determine the association between PET and histologic findings. Receiver-operating-characteristic curves were plotted to determine discriminatory cutoffs for TBR. Statistical significance was set at a P value of less than 0.05. Results: Fifty lesions were identified in 21 patients on PET. Seventeen of 50 (34.0%) targeted lesions in 10 of 21 patients were positive for malignancy. True-positive lesions had a significantly higher SUVmax (6.62 ± 1.70 vs. 4.92 ± 1.27), marrow TBR (2.57 ± 0.81 vs. 1.69 ± 0.51), and blood-pool TBR (4.10 ± 1.17 vs. 2.99 ± 1.01) than false-positive lesions at the early time point (P < 0.01) and remained significant at the delayed time point, except for blood-pool TBR. Focal uptake (odds ratio, 12.07; 95% confidence interval, 2.98-48.80; P < 0.01) and subjective highest suspicion level (odds ratio, 10.91; 95% confidence interval, 1.19-99.69; P = 0.03) correlated with true positivity. Using the receiver-operating-characteristic curve, optimal cutoffs for marrow TBR were 1.9 (area under the curve, 0.82) and 1.8 (area under the curve, 0.85) at early and delayed imaging, respectively. With these cutoffs, 15 of 17 malignant lesions were identified at both time points; however, fewer false-positive lesions were detected at the delayed time point (5/33) than at the early time point (11/33). Conclusion: True positivity of 18F-fluciclovine-targeted prostate biopsy in non-prostatectomy-treated patients correlates with focal uptake, TBR (blood pool and marrow), and subjective highest suspicion level. A marrow TBR of 1.9 at the early time point and 1.8 at the delayed time point had optimal discriminating capabilities. Despite the relatively low intraprostate positive predictive value (34.0%) with 18F-fluciclovine, application of these parameters to interpretative criteria may improve true positivity in the treated prostate.


Subject(s)
Carboxylic Acids , Cyclobutanes , Positron Emission Tomography Computed Tomography , Prostate/pathology , Prostatic Neoplasms/diagnostic imaging , Prostatic Neoplasms/pathology , Aged , Biological Transport , Biopsy , Carboxylic Acids/metabolism , Cyclobutanes/metabolism , Humans , Male , Prostate/diagnostic imaging , Prostatic Neoplasms/metabolism , ROC Curve , Recurrence
15.
J Urol ; 202(2): 413-421, 2019 08.
Article in English | MEDLINE | ID: mdl-30817240

ABSTRACT

PURPOSE: We assessed the feasibility and cancer detection rate of fluciclovine (18F) positron emission tomography-ultrasound fusion targeted biopsy vs standard template biopsy in the same patient with biochemical failure after nonsurgical therapy for prostate cancer. MATERIALS AND METHODS: A total of 21 patients with a mean ± SD prostate specific antigen of 7.4 ± 6.8 ng/ml and biochemical failure after nonoperative prostate cancer treatment underwent fluciclovine (18F) positron emission tomography-computerized tomography (mean 364.1 ± 37.7 MBq) and planning transrectal prostate ultrasound with 3-dimensional image reconstruction. Focal prostatic activity on positron emission tomography was delineated and co-registered with planning ultrasound. During the subsequent biopsy session computer generated 12-core template biopsies were performed and then fluciclovine defined targets were revealed and biopsied. Histological analysis of template and targeted cores were completed. RESULTS: Template biopsy was positive for malignancy in 6 of 21 patients (28.6%), including 10 of 124 regions and 11 of 246 cores, vs targeted biopsy in 10 of 21 (47.6%), including 17 of 50 regions and 40 of 125 cores. Five of 21 patients had positive findings on targeted biopsy only and 1 of 21 had positive findings on template biopsy only. An additional case was upgraded from Grade Group 2 to 3 on targeted biopsy. Extraprostatic disease was detected in 8 of 21 men (38.1%) with histological confirmation in all 3 who underwent lesion biopsy. CONCLUSIONS: Fluciclovine positron emission tomography real-time ultrasound fusion guidance for biopsy is feasible in patients with biochemical failure after nonsurgical therapy for prostate cancer. It identifies more recurrent prostate cancer using fewer cores compared with template biopsy in the same patient. Further study is required to determine in what manner targeted biopsy may augment template biopsy of recurrent prostate cancer.


Subject(s)
Carboxylic Acids , Cyclobutanes , Image-Guided Biopsy , Neoplasm Recurrence, Local/diagnostic imaging , Neoplasm Recurrence, Local/pathology , Positron-Emission Tomography , Prostatic Neoplasms/diagnostic imaging , Prostatic Neoplasms/pathology , Aged , Aged, 80 and over , Feasibility Studies , Humans , Male , Middle Aged , Positron-Emission Tomography/instrumentation , Positron-Emission Tomography/methods , Prospective Studies , Treatment Outcome , Ultrasonography/instrumentation
16.
Mol Imaging Biol ; 21(5): 818-824, 2019 10.
Article in English | MEDLINE | ID: mdl-30617729

ABSTRACT

PURPOSE: To evaluate the ability of anti-1-amino-3-anti-1-amino-3-[18F]fluorocyclobutane-1-carboxylic acid ([18F]fluciclovine) positron emission tomography/X-ray computed tomography (PET/CT) in comparison to Technetium-99m 2-methoxy isobutyl isonitrile ([99mTc]sestamibi) single-photon emission computed tomography/CT (SPECT/CT) for the localization of hyperfunctioning parathyroid glands in patients with hyperparathyroidism. PROCEDURES: Four patients with hyperparathyroidism underwent 60-minutes sequential neck and thorax PET/CT after [18F]fluciclovine (352 ± 28 MBq) injection. Lesion uptake and target-to-background ratios (TBR) were compared with [99mTc]sestamibi (798 ± 27 MBq) SPECT/CT in the same patient. RESULTS: Both techniques detected 4/5 hyperfunctioning parathyroid glands identified at surgery. The highest [18F]fluciclovine uptake and TBRs were at 5-9 min with rapid washout. [99mTc]sestamibi had significantly higher TBRs compared with [18F]fluciclovine (5-9 min) for blood pool (10.9 ± 4.7 vs 1.3 ± 0.6; p < 0.01) and reference muscle backgrounds (5.8 ± 3.0 vs 1.7 ± 0.6; p < 0.01), with non-significant trend for thyroid tissue background (1.3 ± 0.5 vs 1.1 ± 0.5; p = 0.73). CONCLUSION: Hyperfunctioning parathyroid glands can be detected on [18F]fluciclovine PET/CT at early imaging, but conspicuity (TBR) is better with [99mTc]sestamibi. [18F]fluciclovine PET/CT does not seem promising in the detection of hyperfunctioning parathyroid glands.


Subject(s)
Carboxylic Acids/chemistry , Cyclobutanes/chemistry , Parathyroid Glands/diagnostic imaging , Parathyroid Glands/physiopathology , Positron Emission Tomography Computed Tomography , Carboxylic Acids/pharmacokinetics , Cyclobutanes/pharmacokinetics , Feasibility Studies , Female , Humans , Male , Middle Aged , Technetium Tc 99m Sestamibi/pharmacokinetics
17.
Int J Gynaecol Obstet ; 139(2): 202-210, 2017 Nov.
Article in English | MEDLINE | ID: mdl-28732125

ABSTRACT

OBJECTIVE: To assess birth preparedness and complication readiness (BPCR) as well as knowledge of danger signs during pregnancy, labor/delivery, and the postpartum period. METHODS: A cross-sectional study was undertaken of pregnant women attending the prenatal clinic at a tertiary hospital in Nigeria between October and December 2016. A pretested and structured questionnaire was used to collect data on BPCR, and logistic regression was performed to determine factors affecting BPCR. RESULTS: Of 325 participants, 274 (84.3%) had knowledge of BPCR components, and 265 (81.5%) were well prepared for birth and its complications. However, only 89 (27.4%) knew key danger signs during labor/delivery and 81 (24.9%) knew those in the first 2 days after delivery. Older age, higher parity, tertiary education of women, paid employment of women and their spouses, higher social class, frequent prenatal visits, and knowledge of danger signs were significantly associated with BPCR (P<0.05). Higher parity, maternal government employment, and knowledge of danger signs during pregnancy remained determinants of BPCR on logistic regression (P<0.05). CONCLUSION: Although there was a high level of knowledge and practice of BPCR, knowledge of key danger signs was low. Therefore, prenatal education needs to be improved with an emphasis on teaching pregnant women to recognize key danger signs.


Subject(s)
Delivery, Obstetric/psychology , Health Knowledge, Attitudes, Practice , Obstetric Labor Complications/psychology , Pregnant Women/psychology , Adult , Cross-Sectional Studies , Female , Hospitals, Teaching , Humans , Maternal Health Services , Nigeria , Pregnancy , Prenatal Care , Rural Health Services , Rural Population
18.
Aust N Z J Obstet Gynaecol ; 56(6): 578-584, 2016 Dec.
Article in English | MEDLINE | ID: mdl-27385377

ABSTRACT

BACKGROUND: Pre-induction cervical ripening greatly influences the outcome of induction of labour (IOL). AIMS: To compare the efficacy of combined Foley's catheter and vaginal misoprostol with Foley's catheter or low-dose vaginal misoprostol alone for cervical ripening. MATERIALS AND METHODS: Women with a singleton pregnancy admitted at term for cervical ripening and IOL based on clinical indication were randomised into three groups. Oxytocin augmentation was done in the groups as indicated. Significant tests were done using chi square, Fisher's exact and analysis of variance tests. RESULTS: A total of 210 women were randomised into the study. Women in the combined group (Foley's catheter and vaginal misoprostol) had significantly higher postcervical ripening Bishop's score than the women in the other two groups; P = 0.001. Cervical ripening time, induction-delivery time and cervical ripening-delivery interval were significantly shorter in the combined group compared to the other two groups; P = 0.001. Also, women in the combined group required significantly lesser oxytocin augmentation than the other two groups; P = 0.001. There was no difference in Apgar scores at 1 or 5 minutes or in special baby care unit admission among the groups. There were no reported cases of uterine contractile abnormalities or rupture in this study. CONCLUSION: Combined Foley's catheter and vaginal misoprostol provide a shorter duration to the achievement of cervical ripening.


Subject(s)
Cervical Ripening , Misoprostol/administration & dosage , Oxytocics/administration & dosage , Urinary Catheters , Adult , Apgar Score , Cervical Ripening/drug effects , Combined Modality Therapy , Female , Humans , Infant, Newborn , Labor, Induced , Misoprostol/adverse effects , Oxytocics/adverse effects , Oxytocin/administration & dosage , Pregnancy , Prospective Studies , Time Factors , Urinary Catheters/adverse effects
19.
Afr J Reprod Health ; 20(1): 104-108, 2016 Mar.
Article in English | MEDLINE | ID: mdl-29553183

ABSTRACT

Intraligamentary pregnancy is extremely rare. Preoperative diagnosis is often difficult. We report a case of a 33 year old female who had an ectopic pregnancy in the right broad ligament. The pregnancy remained viable till term, but unfortunately resulted in a perinatal death prior delivery. Diagnosis was not made until laparotomy and a well formed still born was delivered. A high index of suspicion and prompt therapeutic intervention are necessary to prevent adverse fetal and or maternal outcome.

20.
Eur J Obstet Gynecol Reprod Biol ; 189: 27-32, 2015 Jun.
Article in English | MEDLINE | ID: mdl-25855324

ABSTRACT

OBJECTIVES: To investigate the impact of the new consensus diagnostic criteria on the prevalence of gestational diabetes, evaluate risk factors, and missed opportunities for diagnosis if selective screening strategy was employed. STUDY DESIGN: A prospective observational data of 1059 women with singleton pregnancy screened for gestational diabetes between 24 and 32 weeks gestation in a universal one-step screening and diagnostic strategy using 75-g oral glucose tolerance testing in an obstetric unit in Nigeria. Logistic regression was used to identify risk factors for GDM. RESULTS: The prevalence of gestational diabetes in accordance with 1999 WHO, new 2013 WHO modified IADPSG and IADPSG criteria was 3.8%, 8.1%, 7.5%, and 8.6%, respectively. Overt diabetes was diagnosed in 1.03% of the study population. Using the new consensus criteria, approximately 20% of GDM cases would have been missed if selective screening strategy was employed. Using multivariable analysis, glycosuria [aOR 8.60 (3.29-22.46)] and previous poor obstetric outcome [aOR 3.01 (1.23-7.37)] were significantly associated with GDM on 1999 WHO criteria. Glycosuria [aOR 2.54 (1.10-6.42)] was the only risk significantly associated with increased risk of developing GDM diagnosed based on new 2013 and IADPSG criteria. CONCLUSION: Using the new consensus screening and diagnostic guidelines, gestational diabetes is prevalent in our obstetric population. Missed opportunities exist with selective screening approach.


Subject(s)
Diabetes, Gestational/diagnosis , Diabetes, Gestational/epidemiology , Mass Screening/methods , Adolescent , Adult , Africa South of the Sahara/epidemiology , Female , Glucose Tolerance Test , Glycosuria , Humans , Middle Aged , Pregnancy , Pregnancy Outcome , Prospective Studies , Risk Factors , World Health Organization , Young Adult
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