Superb Microvascular Imaging Doppler Technique In The Evaluation Of Ovarian Stromal Vascularity In Women With Polycystic Ovary Syndrome.

OBJECTIVE: To compare the assessment of intra-ovarian stromal vascularity through transabdominal ultrasonography with colour Doppler imaging, power Doppler imaging, colour superb microvascular imaging and monochrome superb microvascular imaging in polycystic ovary syndrome cases. METHODS: The retrospective cross-sectional study was conducted at the Obstetrics and Gynaecology outpatient department of the Usak Training and Research Hospital, Turkey, from April 11 to June 18, 2018, and comprised grayscale colour Doppler imaging, power Doppler imaging, colour superb microvascular imaging and monochrome superb microvascular imaging of women with polycystic ovary syndrome. The recorded video images were evaluated by three radiologists and rated through consensus decision. Mean values for age, body mass index, follicle stimulating hormone and luteinizing hormone levels, luteinizing hormone-follicle stimulating hormone ratio, Ferriman Gallwey score, and mean ovarian volume of the subjects were evaluated. Data was analysed using Number Cruncher Statistical System. RESULTS: Of the 54 women evaluated, data of 42(77.8%) was included. There were a total of 83 ovaries, as the left ovary of 1(1.2%) patient was not visible. The mean age and body mass index were 24.02±5.8 years and 25.08±4.5kg/m2. Mean follicle stimulating hormone and luteinizing hormone levels were 5.51±1.91 and 7.91±6.13m IU/mL. Luteinizing hormone/follicle stimulating hormone ratio and Ferriman Gallwey score were 1.4±0.8 and 8.67 ±6.94, respectively. The mean ovarian volume was 12.2±3.43 cm3. The detection of vascularity was colour Doppler imaging 0.72±0.97, power Doppler imaging 0.96±1.08, colour superb microvascular imaging 2.47±1.25, and monochrome superb microvascular imaging 2.75±1.31. The techniques were significant for superb microvascular imaging Doppler than conventional Doppler (p<0.001). Hyper- ovarian stromal vascularity, like a 'stellate' sign, was detected in 17(20.5%) of the total 83 ovaries analysed. CONCLUSIONS: Transabdominal ultrasonography-colour superb microvascular imaging was found to be more effective in detecting ovarian vascularity than conventional Doppler technique in women with polycystic ovary syndrome.

Patellofemoral Anatomical Measurements on MRI in Patient with Suprapatellar Fat Pad Edema and Mass Effect.

OBJECTIVE: To evaluate the impact of patellofemoral joint anatomical measurements of patients with anterior knee pain who were diagnosed with suprapatellar fat pad (SPFP) impingement syndrome (SP-FPIS) by magnetic resonance imaging (MRI). STUDY DESIGN: A prospective, descriptive study. PLACE AND DURATION OF STUDY: Goztepe Education and Research Hospital, between March 2015 and June 2019. METHODOLOGY: The study included 34 patients (Group 1) and 34 healthy volunteers (Group 2) who were referred to the radiology clinic with anterior knee pain; they underwent MRI and diagnosed with SP-FPIS. Twenty-three anatomical measurements such as SPFP cranio caudal length (CC), anteroposterior length (AP), oblique length (OBL), patellar length (PL), patellar tendon length (PTL), Insall Salvati Index (ISI), patellar cartilage distal-tibial tubercle (TT), patellar cartilage length (PCL), Modified Insall Salvati Index (MISI), patellotrochlear cartilage length (TCL), lateral trochlear inclination angle (LTI), etc. related to the morphological structure of SPFP and patellofemoral joint were evaluated and compared in both groups. RESULTS: The mean age of groups 1 and 2 was 45.62±10.87 and 41.47±11.98 years, respectively. There was a statistically significant difference in patients with SP-FPIS in PL, PT, TT, PC, MISI, TC, PTI, MF, PHY, PPI, MT, LTI, CC, AP, and OBL measurements compared with the control group (p<0.05). In the logistic regression analysis performed to evaluate the effect of statistically significant parameters on anterior knee pain, the probability of SP-FPIS increases 1.5 times as PTL increases among the groups, while the risk of SP-FPIS decreases 0.78 times as LTI decreases (p<0.05). CONCLUSION: There is a predisposing effect of PTL increase in SP-FPIS development, while LTI decrease has a protective effect. These results will guide future studies for the development and/or modification of treatment methods. KEY WORDS: Patellofemoral joint, Suprapatellar fat pad impingement syndrome, Anterior knee pain, Knee magnetic resonance imaging, Knee anatomy.

Giant arachnoid granulation mimicking dural sinus thrombosis.

Arachnoid granulations (AG) are composed of dense, collagenous connective tissue that includes clusters of arachnoid cells. They tend to invaginate into the dural sinuses, through which cerebrospinal fluid enters the venous system. AG are most commonly seen at the junction between the middle and lateral thirds of the transverse sinuses near the entry sites of the superficial veins. Presently described is the case of a 21-year-old female who presented at the clinic with recurrent headaches. Magnetic resonance (MR) imaging revealed a 3.5-cm lesion, which extended from confluens sinuum through the superior sagittal sinus. The lesion had created a scallop-shaped area of erosion in the neighboring occipital bone. To exclude sinus thrombosis, MR venography was performed, which displayed a maintained venous flow around the lesion. Headaches were treated symptomatically with medical therapy. Giant AG can be misdiagnosed as dural sinus thrombosis. MR imaging combined with MR venography is the most useful diagnostic tool to differentiate giant AG from dural sinus thrombosis.

Evaluation of Crohn's disease activity by MR enterography: Derivation and histopathological comparison of an MR-based activity index.

AIMS: To compose a qualitative magnetic resonance imaging (MRI) activity index showing Crohn disease (CD) activity, and to compare magnetic resonance enterography (MRE) findings with histopathology results. MATERIALS AND METHODS: Twenty-six patients (11 male and 15 female; mean age 36.7) who had MRE and colonoscopic biopsy between October 2011 and August 2012 were included in the study. On MRE the following parameters were evaluated: bowel wall thickness, bowel wall T2 signal, bowel wall contrast enhancement pattern and degree, length and number of involved bowel segments, perimural T2 signal, mesenteric inflammation, mesenteric lymph nodes and complications of CD. Each parameter was scored to calculate MRI activity index. Biopsy specimens were retrospectively evaluated, histopathologic and endoscopic acute inflammmation scores (AIS, eAIS) were calculated. Each parameter and total MRI activity index were compared with the pathology scores (AIS, eAIS) by Mann-Whitney U test and Spearman correlation. RESULTS: Statistically significant positive correlation was found between AIS and eAIS, mural thickness and eAIS. Moderate correlation was found between MRI activity index and eAIS, mural enhancement degree and eAIS; and poor correlation was found between mesenteric inflammation score and eAIS, MRI activity index and AIS, however they were not statistically significant. CONCLUSIONS: In CD, bowel wall thickness measured by MRE is best correlated with the histopathologic results which are accepted as the reference standard. In cases with high MRI activity index, eAIS is also generally high. MRI activity index which is measured simply and noninvasively can be used in the follow up of CD.

Brain malformations associated with Knobloch syndrome--review of literature, expanding clinical spectrum, and identification of novel mutations.

BACKGROUND: Knobloch syndrome is a rare, autosomal recessive, developmental disorder characterized by stereotyped ocular abnormalities with or without occipital skull deformities (encephalocele, bone defects, and cutis aplasia). Although there is clear heterogeneity in clinical presentation, central nervous system malformations, aside from the characteristic encephalocele, have not typically been considered a component of the disease phenotype. METHODS: Four patients originally presented for genetic evaluation of symptomatic structural brain malformations. Whole-genome genotyping, whole-exome sequencing, and confirmatory Sanger sequencing were performed. Using immunohistochemical analysis, we investigated the protein expression pattern of COL18A1 in the mid-fetal and adult human cerebral cortex and then analyzed the spatial and temporal changes in the expression pattern of COL18A1 during human cortical development using the Human Brain Transcriptome database. RESULTS: We identified two novel homozygous deleterious frame-shift mutations in the COL18A1 gene. On further investigation of these patients and their families, we found that many exhibited certain characteristics of Knobloch syndrome, including pronounced ocular defects. Our data strongly support an important role for COL18A1 in brain development, and this report contributes to an enhanced characterization of the brain malformations that can result from deficiencies of collagen XVIII. CONCLUSIONS: This case series highlights the diagnostic power and clinical utility of whole-exome sequencing technology-allowing clinicians and physician scientists to better understand the pathophysiology and presentations of rare diseases. We suggest that patients who are clinically diagnosed with Knobloch syndrome and/or found to have COL18A1 mutations via genetic screening should be investigated for potential structural brain abnormalities even in the absence of an encephalocele.

Dynamic multidetector computed tomography findings of hepatocellular carcinoma of hepatitis B virus-positive and -negative patients.

BACKGROUND: The objective of this study was to retrospectively investigate and compare multidetector computed tomography findings of hepatocellular carcinoma (HCC) in hepatitis B virus (HBV)-positive and -negative patients. METHODS: Triphasic (arterial, portal venous, and delayed phases) dynamic multidetector computed tomography (CT) was performed in 83 patients with HCC, 48 of whom were HBV-positive. The diagnosis of HCC was established with typical CT imaging findings (68 patients) or histopathological evaluation (15 patients). Distribution of solitary, multiple, and diffuse HCC, portal/hepatic vein thrombosis, metastasis, and patients with high alpha-fetoprotein levels in the HBV-positive and -negative groups were compared using the Kolmogorov-Smirnov test. Lesion size, alpha-fetoprotein levels, arterial, portal, delayed enhancement, and washout of lesions were compared using the Student's t-test. RESULTS: Hypervascular tumors were observed in 72 (87%) patients, and hypovascular tumors were found in 11 (13%) patients. The mean alpha-fetoprotein value of HBV-positive patients with HCC was significantly higher than the mean alpha-fetoprotein value of HBV-negative patients (P < 0.05). Portal/hepatic vein thrombosis and metastasis were more frequently observed in HBV-positive patients (P < 0.05). The frequencies of solitary, multiple, and diffuse lesions in HBV-positive and -negative patients were not significantly different (P > 0.05). The mean diameters, arterial, portal, and delayed phase attenuations, and washout of HCC were not significantly different (P > 0.05). CONCLUSIONS: Multidetector CT imaging findings of HCC in HBV-positive and -negative patients are alike. Portal/hepatic vein thrombosis and metastasis are more frequently observed in HBV-positive patients. Alpha-fetoprotein levels are higher in HBV-positive patients.

Sonographic assessment of fatty liver: intraobserver and interobserver variability.

Non-alcoholic fatty liver disease (NAFLD) is a common liver disease worldwide and ultrasonography is widely used in the diagnosis and the follow-up we purposed to assess intraobserver and interobserver variability in the sonographic evaluation of the existence and steatosis grades of NAFLD. Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels and AST to ALT (AST/ALT) ratio were compared between the grades of hepatosteatosis. Hepatic ultrasonography (US) examinations consisted of 5-10 static images of 113 successive adult patients, whose records were in the picture archiving and communication system (PACS) of our hospital were retrospectively evaluated by two experienced radiologists. Hepatic images were graded into 4 groups; as normal, mild, moderate or severe hepatic steatosis. Evaluation of hepatic steatosis of the same set of images was repeated after one month under the same conditions. Interobserver and intraobserver agreement was assessed by using kappa (κ) statistics. In each group, the percentage of individuals with high ALT and/or AST, or AST/ALT ratio over 1 was calculated. The intraobserver agreement was 51%, fair kappa (κ=0.356) for observer 1; and 68%, moderate (κ=0.591) for observer 2. The interobserver agreements in the initial and second readings were 39% and 40%, fair (κ=0.208) and (κ=0.225), respectively. Elevations of ALT and/or AST levels were similar between groups depending on the degree of hepatosteatosis among the patients. Visual assessment of NAFLD by ultrasonography has substantial interobserver variability, and reproducibility of results is limited. More objective imaging modalities are needed to evaluate the degree of hepatosteatosis.

The role of positron emission tomography with 18F-fluorodeoxyglucose in nodal staging of clinical and radiological N0 head and neck cancers.

The objective of the study was to evaluate the impact of 18F-fluorodeoxyglucose positron emission tomography/computed tomography (PET/CT) imaging on nodal staging for head and neck cancers. This was a retrospectively analyzed single institution study. The study population consisted of 36 patients with head and neck cancers who were evaluated with PET/CT and went on to neck dissection. All of them had clinically and radiographically negative neck (N0) and each patient underwent PET/CT imaging before undergoing selective neck dissection for N0 disease. Tissues were submitted for histopathologic examination and were oriented for the pathologist to permit correlation between the histopathologic findings and the imaging results. The sizes of the lymph nodes and the maximum standardized uptake values (SUVmax) measured from PET/CT images were compared with the histopathologic findings. All primary tumors were visualized with PET/CT. On histopathological examination, 19 patients had positive and 17 patients had negative lymph nodes. Receiver operating characteristic analyses were used to predict the optimal corrected SUVmax cutoffs; the optimal value was 2.95 for respective outcomes of lymph node involvement. This cutoff value yielded 84.2% sensitivity and 76.5% specificity for nodal-level staging. PET/CT proved to be accurate in 27 (75%) patients and inaccurate in 9 (25%) patients. PET/CT was a valuable tool to assess nodal stage of head and neck cancers, and should be considered before surgical treatment.

Evaluation of retrobulbar blood flow by color doppler ultrasonography after intravitreal ranibizumab injection in patients with neovascular age-related macular degeneration.

PURPOSE: This study aimed to evaluate the changes in retrobulbar blood flow by using color Doppler sonography in patients who had undergone intravitreal ranibizumab injection for neovascular age-related macular degeneration (AMD). METHODS: The study comprised 37 AMD patients who had undergone intravitreal 0.5 mg ranibizumab injection. The ophthalmic artery, central retinal artery, and short lateral posterior ciliary artery of both eyes of patients were evaluated by color Doppler sonography. Peak systolic velocity, end-diastolic velocity, and resistance index were calculated before injection, and after injection on day 7 and day 30. The pre- and postinjection values were compared using Wilcoxon signed rank test. RESULTS: In a comparison with the preinjection values of peak systolic velocity, end-diastolic velocity, and resistance index, the postinjection values at both day 7 and day 30 showed no statistically significant difference in ophthalmic artery, lateral posterior ciliary artery, and central retinal artery (p > 0.05). Similarly, for the same parameters, pre- and postinjection values in the uninjected fellow eye showed no statistically significant difference (P > 0.05). CONCLUSIONS: Intravitreal ranibizumab injection for neovascular AMD does not cause a significant change in the retrobulbar blood flow in either the injected eye or the fellow eye.

Isolated primary lymphomatoid granulomatosis of central nervous system.

Lymphomatoid granulomatosis (LG) is an infrequent extranodal Epstein-Barr virus (EBV)-associated B-cell lymphoproliferative disorder characterized by angiocentric and angiodestructive polymorphic lymphoid infiltration. CNS is involved in one of every 4 patients, but isolated CNS involvement at presentation is rare. A 67-year-old man was admitted to our hospital because of visual impairment. Magnetic resonance imaging (MRI) revealed a suprasellar mass lesion isointense to gray matter on T1 and T2-weighted images. The hypotalamic/chiazmatic mass was resected through a transsphenoidal approach. Pathological examination of the biopsy specimen revealed large atypical, CD20-positive B-lymphocytes within a background containing numerous CD3-positive small T-lymphocytes and scattered admixed plasma cells and histiocytes. Necrotic areas and vascular infiltration by a mixed mononuclear cell infiltrate with scattered large atypical lymphoid cells was present. In situ hybridization for EBV showed few large cells both around blood vessels and adjacent to the necrotic zone. This morphologic and immunophenotypic features was diagnostic for lymphomatoid granulomatosis. The patient was successfully treated with steroids, high-dose methotrexate and radiotherapy.

Facial vein aneurysm associated with sialadenitis.

A 20 year-old man presented with pain and swelling of the left submandibular area. Neck sonography revealed enlargement of the submandibular gland, coarsening of its echotexture with a few calculi and a multiloculated cystic lesion. Doppler sonography revealed venous flow within the cystic lesion and aneurysmal dilatation of the adjacent facial vein. CT angiography confirmed the facial vein aneurysm. We hypothesize that inflammation of the gland had weakened the wall of the adjacent facial vein, causing aneurysmal dilatation.

Multidetector CT imaging of arterial supply to sinuatrial and atrioventricular nodes.

PURPOSE: The aim of this study is to depict anatomic characteristics of sinuatrial nodal artery (SANA) and atrioventricular nodal artery (AVNA) of the heart with multidetector computed tomography. METHODS: In our study, 400 patients referred to radiology departments of two institutions for coronary CT angiography were retrospectively evaluated. 350 patients had been examined by dual-source 64-slice CT, and 50 patients by 64-section multidetector CT. Transverse sections with a thickness of 0.6 mm were used in dual-source 64-slice CT studies, and 0.8 mm were used in 64-section multidetector CT examinations for the evaluation of coronary arteries and conduction system branches. Anatomic origin, localization of the origin, diameter, number, course, and variants of the SANA and AVNA were examined with coronary multidetector CT angiography. RESULTS: SANA and AVNA could be imaged by multidetector CT in all patients. There was a single SANA in 383 (95.7%) patients, and two SANAs in 17 (4.2%) patients. Two hundred thirty-three (58.2%) patients had one SANA originating from right coronary artery (RCA), 149 (37.2%) patients had one SANA originating from left circumflex (LCX) artery, and one patient had a SANA originating from the aorta. AVNA originated from distal RCA in 351 patients (87.7% of all patients), and from distal LCX artery in 49 patients (12.3% of all patients). CONCLUSIONS: The arteries that supply the sinuatrial node and atrioventricular node can be imaged with multidetector CT. These arteries have variations in number, origin and course.

CT diagnosis of intrasplenic metastasis from ovarian carcinoma.

Intrasplenic metastases from ovarian carcinoma cannot be always demonstrated intraoperatively. CT is the most important imaging modality of choice for staging and follow-up ovarian cancer; in this study we searched CT appearances of intrasplenic metastases from ovarian carcinoma. We retrospectively reviewed imaging histories of the patients with ovarian cancer from the radiology information system, and found 12 patients with intrasplenic metastasis. All patients underwent abdominal CT with 16-MDCT. We searched number, density and maximum diameters of splenic metastasis. The growing rate of three lesions, which were followed up by CT, was calculated. Serum cancer antigen (CA) 125 levels were noted. We also evaluated clinical history and pathology reports of all patients. Splenic metastases, solitary or multiple, were detected most frequently during the follow-up (1-14 years after initial diagnosis) and most were associated with other sites of recurrence. The diameters of lesions ranged from 4 to 85mm. All lesions appeared hypodense except for one lesion with dense calcification. Densities of lesions ranged from 12 to 208 Hounsfield units (mean, 49±51HU). Most lesions appeared as solid well-defined nodules; however some lesions had lobulated and irregular contours with an infiltrative pattern. The growing rates of three lesions were 0.72mm/month, 1.75mm/month and 2.70mm/month. Eight patients had elevated serum CA 125 levels (40-1256U/mL). We concluded that CT can demonstrate intraparenchymal and infiltrative splenic metastasis in patients with ovarian cancer even in the absence of increased CA 125 levels.

Diameters of the common bile duct in adults and postcholecystectomy patients: a study with 64-slice CT.

This study aims to collect data by multidetector computed tomography (MDCT) on the diameter of the normal common bile duct (CBD) and the diameter of CBD after cholecystectomy. In this retrospective study, CBD measurements were performed on axial oblique images, perpendicular to the long axis of the distal CBD. The mean diameter of the normal CBD was measured in 604 patients without cholecystectomy. The patients were divided into 6 groups according to their age. Analysis of variance (ANOVA) was used to compare data obtained from the six age groups. The mean diameter of the CBD of 46 patients who had cholecystectomy was calculated. The results were compared with age matched control group by Student's t test. The largest diameter of CBD ranged from 1.8 to 11.8mm. The mean of the largest diameter of 604 subjects was 4.77 ± 1.81. The diameter of the CBD significantly increased with age. Mean largest CBD diameters of postcholecystectomy subjects (7.28 ± 2.37) were significantly greater than age matched control group. In conclusion the diameter of CBD shows a considerable increase with age. The largest diameter of the CBD is up to 6mm in most of the subjects. An upper limit of 8mm appears reasonable after the age of 50; and an upper limit of 10mm seems appropriate for cholescystectomized subjects.

A previously unreported malignancy of the thyroid.

Ameloblastic fibrosarcoma or ameloblastic sarcoma is an extremely rare odontogenic neoplasm. We report a case of an ameloblastic fibrosarcoma arising from thyroid gland in a 44 year-old woman. Following total thyroidectomy, a histopathologic, immunohistologic, and genotypic examination revealed ameloblastic fibrosarcoma. The tumor was composed of odontogenic epithelium, resembling that of ameloblastoma, and a mesenchymal part exhibiting features of fibrosarcoma. To our review, our case represents the first report of ameloblastic fibrosarcoma of the thyroid gland. Ameloblastic fibrosarcoma may arise from thyroid gland.

Biliary Fasciola gigantica case report from Turkey.

We present a case of Fasciola gigantica-induced biliary obstruction and cholestasis diagnosed and treated via endoscopy and trichlorobendazole treatment. This is the first case of Fasciola gigantica treated via endoscopic biliary extraction during ERCP and drug treatment reported from Turkey.

Nonoperative management of pancreatic injuries in pediatric patients.

PURPOSE: Nonoperative management of minor pancreatic injury is the generally accepted approach. However, the management of major pancreatic injury remains controversial in pediatric patients. The aim of the present study was to determine the safety and efficacy of nonoperative management of pancreatic injury in pediatric patients. METHODS: Between 2003 and 2009, 31 patients, 28 male and 3 female, with pancreatic injury due to blunt abdominal trauma were treated in our clinic. All patients were evaluated by ultrasonography, computed tomography (CT), and evaluation of serum amylase levels. Patients with ongoing hemodynamic instability after resuscitation or signs of bowel perforation underwent immediate laparotomy, and the remaining patients were conservatively treated. Conservative treatment consisted of nasogastric tube replacement, total parenteral nutrition, monitoring of amylase levels, and serial clinical examination. RESULTS: The most common mechanism of injury was a fall (35.4%). Ten patients (32.2%) had associated extra-abdominal injuries, and 18 patients (58.1%) had associated abdominal injuries. The spleen was the most common site of intra-abdominal injury that was associated with pancreatic trauma. Initial amylase levels were normal in 5 patients, whose CT scans revealed pancreatic injury. Twenty-five patients (80.6%) were conservatively treated. Six patients (19.4%) required surgical intervention because of a hollow viscus or diaphragmatic injury and hemodynamic instability. A pseudocyst developed in 11 of the 25 patients who were nonoperatively treated; 6 patients required intervention for the pseudocyst (percutaneous drainage and cystogastrostomy). No patient succumbed to injury. CONCLUSIONS: The majority of the pancreatic injuries in pediatric patients can be successfully treated conservatively, unless there is hemodynamic instability and a hollow viscus injury. The most common complication is a pseudocyst.

A case of biliary Fascioliasis by Fasciola gigantica in Turkey.

A case of Fasciola gigantica-induced biliary obstruction and cholestasis is reported in Turkey. The patient was a 37- year-old woman, and suffered from icterus, ascites, and pain in her right upper abdominal region. A total of 7 living adult flukes were recovered during endoscopic retrograde cholangiopancreatography (ERCP). A single dose of triclabendazole was administered to treat possible remaining worms. She was living in a village of southeast of Anatolia region and had sheeps and cows. She had the history of eating lettuce, mallow, dill, and parsley without washing. This is the first case of fascioliasis which was treated via endoscopic biliary extraction during ERCP in Turkey.

The frequency of intracranial arterial fenestrations: a study with 64-detector CT-angiography.

Fenestration is a vascular variation that begins with a common origin, then splits into two parallel luminal channels and rejoins distally. Potential association between anomalies of cerebral circulation and increased occurrence of aneurysm makes intracranial arterial fenestrations important. The planning of intracranial arterial interventions may be complicated if a fenestration occurs proximal to the site of intended treatment. This study is planned to determine the frequency of fenestrations on CT angiography and to search whether there is relationship between aneurysms and fenestrations. CT angiographies of 395 consecutive patients, performed by 64-detector CT, were retrospectively reviewed for aneurysms and fenestrations. Overall fenestration frequency, fenestration frequency in patients with and without aneurysm, and aneurysm frequency in patients with and without fenestration were searched. Demographic characteristics of patients were also compared. Overall fenestration frequency was 12.9%. Vertebrobasilar system (5.56%) and anterior communicating region (5.32%) were the two most frequent sites of fenestration. The rate of fenestrations was not significantly different between patients who had and did not have aneurysms. Mean age was significantly higher, and females were predominant in patients with aneurysms. However our results did not show significant difference in age and sex of patients with fenestrations. The frequency of fenestrations in this study is higher than in previously published radiological studies, suggesting that fenestrations are relatively common. There is no significant relationship between the frequency of aneurysms and fenestrations.