Sonographic evaluation of thyroid nodule based on thyroid imaging reporting and data system classification and its correlation with fine needle aspiration cytology findings

Background: Thyroid nodules, common clinical occurrences, often require diagnostic assessment. Ultrasonography (USG) is primary non-invasive method for detection, with advancing technology enhancing detection capabilities. Fine needle aspiration cytology (FNAC) remains standard but poses risks and expenses. American college of radiology-thyroid image reporting and data system (ACR-TIRADS), introduced in 2017, offers a systematic scoring system based on ultrasound features. This study aims to evaluate USG guided by ACR-TIRADS for accurate nodule classification. Methods: A 1.5-year study at department of radio-diagnosis of BSMCH evaluated thyroid nodules using high-resolution USG based on ACR-TIRADS criteria, followed by FNAC for selected cases, comparing results for concordance. Results: Out of 47 thyroid nodules evaluated, 19.1% were malignant and 80% benign. ACR-TIRADS demonstrated sensitivity, specificity, and accuracy of 66.7%, 87.8%, and 82.9%, respectively. Higher ACR-TIRADS categories correlated with an increased risk of malignancy. Suspicious USG features such as hypo-echogenicity, taller-than-wide shape, lobulated margin, and punctate echogenic foci exhibited significant predictive value for malignancy, with varying levels of sensitivity and specificity. Overall, USG parameters demonstrated notable accuracy in identifying malignant nodules. Conclusions: ACR-TIRADS 2017 reliably predicts thyroid nodule malignancy, reducing unnecessary FNAC procedures, minimizing patient discomfort, and optimizing healthcare resources.

Intramyofiber skeletal muscle invasion: An unusual pattern of muscle infiltration in breast cancer

Skeletal muscle infiltration in carcinoma is a rare entity. Intramyofiber skeletal muscle invasion is the rarest type of muscle infiltration. Here we present one such case of intramyofiber skeletal muscle invasion in a case of breast carcinoma.

Seasonal impact on life-fertility table parameters of Oligonychus sapienticolus Gupta infesting banana under Gangetic Basin of West Bengal, India

Aim: The aim of the present study was to investigate the impact of seasonal variation on life-fertility table of Oligonychus sapienticolus Gupta.Methodology: Adult mite population were collected from infested banana leaves and reared under laboratory condition. A cohort of 100 eggs laid at a time by a population of 100 gravid females was considered for the experiment. This cohort was used for constructing of age specific life-fertility table. Seasonal impact on different life-fertility table parameters were studied by using different formulas. Results: The perusal of data showed that the net reproductive rate, finite rate of increase and innate capacity for increase in number were highest during summer months, but mean generation time, doubling time and corrected generation time declined with increase in temperature. Interpretation: The study concludes that this mite prefer hot and dry climatic condition for better growth and development. So, during this period appropriate management measures against this mite will avoid the chances of yield loss of banana plantation

Detection of vancomycin resistance in enterococcus species isolated from clinical samples and feces of colonized patients by phenotypic and genotypic methods.

Background: The aim of this study was to find out the clinical correlation between the presence of vancomycin‑resistant genes (van A and van B) and their expression as detected by phenotypic tests in colonized patients and in clinical isolates. Materials and Methods: Enterococci were isolated from various clinical samples and also from fecal specimens of colonized patients at the time of admission, after 48 h and after 5 days of admission. Identification to species level was done using standard methods. Vancomycin susceptibility in Enterococci was detected by disc diffusion test. Minimum inhibitory concentration was determined by agar dilution method. Multiplex polymerase chain reaction (PCR) was used to detect the presence of van genes. Results: Out of all the clinical and fecal samples processed, 12.0% isolates were either vancomycin resistant or vancomycin intermediate. Further, these isolates carried van A or van B genes as confirmed by PCR methods. Expression of van A gene was found to be more in Enterococcus faecalis (28.3%) as compared to Enterococcus faecium (25.0%) in both clinical and fecal isolates. 16.6% strains of E. faecium and 15.0% strains each of E. faecalis and Enterococcus gallinarum were found to carry van B genes. The overall prevalence of vancomycin resistant Enterococci (VRE) in colonized patients was about 9.6%. Prior administration of antibiotics had significant effect (P = 0.001) on VRE carriage. Urinary tract infection was the most common infection caused by vancomycin susceptible Enterococci (VSE), 105/214 (49.0%) and VRE, 13/36 (36.1%). There was no significant difference (P = 0.112) in the distribution of VRE and VSE in different infection types. Both clinical and fecal VRE showed maximum resistance to penicillin, ampicillin, and piperacillin. Resistance to linezolid was 2.8% in clinically isolated VRE. Conclusion: VRE in our study were found to be resistant to a number of commonly used antibiotics. The frequency of isolation of vancomycin resistant E. faecalis (VRE.fs), which is highly virulent, and the number of strains harboring van A gene in our hospital setup is high and needs to be addressed.

Shewanella algae in acute gastroenteritis.

Shewanella algae is an emerging bacteria rarely implicated as a human pathogen. Previously reported cases of S. algae have mainly been associated with direct contact with seawater. Here we report the isolation of S. algae as the sole etiological agent from a patient suffering from acute gastroenteritis with bloody diarrhoea. The bacterium was identifi ed by automated identifi cation system and 16S rRNA gene sequence analysis. Our report highlights the importance of looking for the relatively rare aetiological agents in clinical samples that does not yield common pathogens. It also underscores the usefulness of automated systems in identifi cation of rare pathogens.

Novel synthetic anti-fungal tripeptide effective against Candida krusei.

Introduction: Candida species are the major fungal pathogens of humans. Among them, Candida krusei have emerged as a notable pathogen with a spectrum of clinical manifestations and is known to develop resistance against azoles mainly fl uconazole. Anti-microbial peptides play important roles in the early mucosal defence against infection and are potent anti-fungal agents since they fi ght against fungal infection as well as have ability to regulate host immune defence system. The aim of the study was to synthesize a small anti fungal peptide. Materials and Methods: The series of tripeptides were synthesized and screened for antifungal activity against Candida strains according to CLSI guidelines. Toxicity effect of peptide was tested with human erythrocytes. The mode of action of peptide on fungus was resolved by scanning electron microscopy (SEM) studies Results: The tripeptide FAR showed a prominent anti fungal activity among the series. The minimum inhibitory concentration and minimum fungicidal concentration of tripeptide FAR was found to be 171.25 μg/ml and 685 μg/ml, respectively against Candida krusei. The therapeutic index was 2.9. The haemolytic experiment revealed that this peptide is non - toxic to human cells. The SEM studies showed disruption of cell wall and bleb-like surface changes and irregular cell surface. Conclusion: The peptide showed a signifi cant antifungal activity against C. krusei. Thus, it can set a platform for the design of new effective therapeutic agents against C. krusei.

Designing of Culture Media for Increased Recovery of Total Heterotrophs From Water Samples.

Bacteriological examination of water is one of the most important areas of investigation because upto 80% of all sickness and diseases in the world are water related. Heterotrophic bacteria are the least studied indicator for water quality determination. The present investigation encompasses two different approaches to estimate water quality.e.g a) to modify the conventional culture media for maximal recovery of heterotrophs and b) to assess the load of the total aerobic heterotrophs as an indicator from drinking and surface water. Six samples from different sources were examined with nine different media such as NA, MNA, PCA, PCA-6, SDA-8, R2A, SE, SOE, and SSE for comparative evaluation. Among them,SE,SOE and SSE are newly formulated media using soil extract, soybean extract and the combination of both of them respectively.SDA-8 was found to be superior in most cases in relation to its comparative efficiency.SSE medium was also found to be superior in case of two samples. The range of heterotrophic bacterial count on different media varied from 3.0 x104 cfu/100ml to 8.6x 105 cfu/100ml and 9.5x106 cfu/100ml to 7.5x107 cfu/100ml in case of drinking water and surface water respectively.

Effects of five earthworm species on some physico-chemical properties of soil.

An incubation experiment was conducted to study the changes that occur in organic carbon content, phosphorous and potassium availability and other soil properties with ingestion of soil mixed with rubber leaf litter and cow dung by five earthworm species viz. Pontoscolex corethrurus, Drawida assamensis, Drawida papillifer papillifer, Eutyphoeus comillahnus and Metaphire houlleti of rubber plantation in Tripura (India). Due to earthworm activity organic C (1.56-1.63%) and available P (14.71-27.60 mg 100 g-1) and K (43.50-49.0 mg 100 g-1) content of the soil increased significantly (p<0.05) in most of the earthworm species studied. M. houlleti and D. papillifer papillifer had the highest P (27.60 mg 100 g-1) and K (49.0 mg 100 g-1) mobilization capacity, respectively. Earthworms, irrespective of the species, increased the pH (7.05-7.17) and electrical conductivity (663-1383 µS cm-1) of the soil significantly (p<0.05).

Antiviral activity of crude extracts of Eugenia jambolana Lam. against highly pathogenic avian influenza (H5N1) virus.

Crude extracts of leaves and bark of E. jambolana were tested for antiviral activity against highly pathogenic avian influenza virus (H5N1) by CPE reduction assay in three different layouts to elucidate virucidal, post-exposure and pre-exposure antiviral activity of the extracts. The cold and hot aqueous extracts of bark and hot aqueous extract of leaves of E. jambolana showed significant virucidal activity (100% inhibition) which was further confirmed in virus yield reduction assay (~98 to 99% reduction) and by egg based in ovo assay. The selective index (CC50/EC50) of hot aqueous extract (248) and cold aqueous extract (43.5) of bark of E. jambolana showed their antiviral potential against H5N1 virus. The significant virucidal activity of leaves and bark of E. jambolana merits further investigation as it may provide alternative antiviral agent for managing avian influenza infections in poultry farms and potential avian-human transmission.

Coronary Angiographic Patency in Patients With Acute Myocardial Infarction With or Without Thrombolytic Therapy.

Background: The myocardial infarction (MI) is a leading cause of morbidity and mortality in developed countries as well as in developing countries including Bangladesh. Streptokinase since its introduction has been shown to reduce mortality significantly. The outcome of MI treated with streptokinase can be evaluated either by CAG measurement of TIMI blood flow or by the measurement of ST segment resolution in 12 lead ECG. Methods: This cross sectional comparative study was conducted in the department of Cardiology in Sylhet M A G Osmani Medical college, to compare the patency between MI patients with or without streptokinase therapy, from Jan 2008 to Dec 2009. Considering enrollment criteria a total of 96 patients with acute MI were evaluated. All patients were categorized into two groups. Group-I (n=48), who received streptokinase and Group-II (n=48), who did not received the same(due to late presentation). CAG was done with in 7- 28 days of on set of pain. The patients admitting in coronary care unit with the diagnosis of STEMI were taken as the study subjects. Results: Adequate TIMI (thrombolysis in myocardial infarction) flow was higher who received streptokinase (85.4%) than those who did not receive the therapy (52.1%). Conclusion: This study indicates that streptokinase therapy is associated with rapid and sustained reperfusion of the infarct related artery in the treatment of acute myocardial infarction.

Reducing Use of Injections Through Interactional Group Discussions: A Randomized Controlled Trial.

Objective: To determine whether “interactional group discussions” could reduce prescriptions of injections by physicians. Study design: Randomized controlled trial. Setting: Rural public health care facilities, North 24 Parganas district, West Bengal, India. Subjects: 72 medical officers, 36 each in intervention and control groups. Intervention: Interactional group discussions. Outcome measure: Proportion of prescriptions including at least one injection. Results: In the intervention group, 249 of 1,080 prescriptions (23%) included at least one injection compared with 79 of 1,080 prescriptions (7%) before and after the intervention, respectively. (RR: 0.32, 95% CI: 0.25-0.40). In the control group, 231 of 1,080 prescriptions (21%) included at least one injection before the intervention vs 178 of 1,080 prescriptions (16%) after the intervention (RR 0.77, 95% CI: 0.65-0.92). Conclusion: Interactional group discussions reduce prescription of injections.

Characterization of Candida species isolated from cases of lower respiratory tract infection.

OBJECTIVES: (1) To identify and characterize the Candida species isolates from lower respiratory tract infection. (2) to determine the rate of isolation of Candida species from sputum samples. METHODS: This study was carried out in the Department of Microbiology, Manipal Teaching Hospital, Pokhara, Nepal from June 2002 to January 2003. A total of 462 sputum samples were collected from patients suspected lower respiratory tract infection. The samples were processed as Gram staining to find out the suitability of the specimen, cultured on Sabouraud's Dextrose Agar (SDA) and also on blood agar and chocolate agar to identify the potential lower respiratory tract pathogens. For the identification of Candida, sputum samples were processed for Gram stain, culture, germ tube test, production of chlamydospore, sugar fermentation and assimilation test. For the identification of bacteria, Gram stain, culture, and biochemical tests were performed by standardized procedure. RESULT: Out of 462 samples, 246 (53.24%) samples grew potential pathogens of lower respiratory tract. Among them Haemophilus influenzae 61(24.79%) and Streptococcus pneumoniae 57 (23.17%) were the predominant bacterial pathogens. Candida species were isolated from 30 samples (12.2%). The majority of Candida species amongst the Candida isolates were Candida albicans 21(70%) followed by Candida tropicalis 4(13.33%). Candida krusei 3(10%), Candida parapsilosis 1(3.33%) and Candida stellatoidea 1(3.33%). The highest rate of isolation of Candida was between the age of 71 and 80. CONCLUSION: Candida isolation from sputum samples is important as found in the present study in which Candida species were the third most common pathogen isolated from patients with lower respiratory tract infection.

Combined occurrence of hyperthyroid Graves' and Hashimoto's thyroiditis.

A 40 years old, married Govt. servant from Sadar upazila, Mymensingh was admitted in Mymensingh Medical College Hospital on 9(th) February, 2005 with the complaints of excessive sweating for 1 year, gradual loss of weight for 6 months, swelling in front of the neck for 1(1/2) months, and hoarseness of voice for 1 month. He was nervous, irritable, emotionally labile. Thyroid gland was symmetrically enlarged, firm in consistency with scalloped surface. Palms were warm and sweaty with fine tremor in outstretched hands. Lid lag, lid retraction and proptosis were the occular manifestations. All the reflexes were exaggerated. Radioactive iodine uptake showed enlarged gland with homogenously increased radiotracer concentration, ultrasonogram findings were enlarged gland with hypoechoic parenchyma with fibrous septa, T(3), T(4), TSH values were 6.56 nmol/L, 241.09 nmol/L and 0.14 mIU/L respectively. Thyroid microsomal antibody level was 32.87%. Thyroid FNAC findings were sheets of regular follicular cells, some large cells with granular basophilic cytoplasm, macrophages, a few inflammatory cells and giant cells. All the above findings were in favour of a diagnosis of hyperthyroid Graves' with Hashimoto's thyroiditis.

Ultrasonographic determination of amniotic fluid volume in normal pregnancy.

Ultrasonographic assessment of amniotic fluid has important implications because documentation of abnormalities of amniotic fluid volume may provide valuable information to enhance fetal health assessment. But in our country no study was conducted to establish normal values of amniotic fluid volume. So, this study was designed to find out normal values of amniotic fluid volume at various stages of gestation. The study was conducted in the department of Radiology and Imaging, BIRDEM in collaboration with the department of Obstetrics and Gynaecology, BIRDEM from 1(st) July, 2001 to 30(th) June, 2002. One hundred and twenty patients of normal pregnancy between 15 to 38 weeks' gestation were scanned by ultrasonography and their amniotic fluid volume was measured. For each gestational age between 15 and 38 weeks, 5 patients were recruited, and only one examination was done per pregnancy. Currently, the three semi-quantitative methods of assessing amniotic fluid volume include the amniotic fluid index (AFI), single deepest pocket (SDP) and two diameter pocket (TDP). Amniotic fluid volume of the study population was measured by the three methods. The values were plotted against each week in tabulated form. Thus the normal range of amniotic fluid volume in three methods (AFI, SDP, TDP) across gestational age in normal pregnancies was established. The mean value of amniotic fluid volume in AFI, SDP and TDP were 13.224 cm, 4.679 cm and 19.252 cm(2) respectively. AFI and SDP showed amniotic fluid volume increased with increasing gestational age up to early third trimester, but volume decreased thereafter. The prevalence of false positive result for oligohydramnios was 0.83% for AFI, 0% for SDP and 23% for TDP. The prevalence of false positive result for hydramnios was 1.66% for AFI, 0.83% for SDP and 0% for TDP. Thus the normal values of amniotic fluid volume for each of the three ultrasonographic techniques in the perspective of our country were obtained from the study. As the study was conducted with a limited number of patients, further study may be carried out with a large number of observations to reevaluate the results of the study.

Prevalence of Moraxella catarrhalis infections of the lower respiratory tract in elderly patients.

OBJECTIVES: To determine: *rate of isolation of Moraxella catarrhalis in elderly patients having lower respiratory tract infection *The antibiotic susceptibility pattern of Moraxella catarrhalis isolates. *The predisposing factors responsible for Moraxella catarrhalis infections of lower respiratory tract. MATERIAL AND METHOD: This is a prospective study carried out at Manipal Teaching Hospital, Pokhara during May 2002 to April 2003. A total of 716 sputum samples collected from patients with suspected lower respiratory tract infection were investigated. The samples were subjected to Gram stain, culture and sensitivity. Sputum samples were inoculated on blood and chocolate agar and incubated at 37 degrees C for 18 to 24 hours in candle jar containing 3-5% Co2. For the identification of bacterial isolates, the cultural and colonial characteristics were recorded and identified with the use of biochemical test. The susceptibility of bacterial isolates to antimicrobial agent was performed following Kirby-Bauer method. RESULT: Out of the 716 samples, 355 (49.58%) grew normal commensals of the upper respiratory tract. Respiratory pathogens were recovered from 361 (50.41%) samples. The most common respiratory pathogen was H. influenzae (26. 86%), followed by S. pneumoniae (21.16%). Moraxella catarrhalis accounted for 6.90%. Rate of isolation of Moraxella catarrhalis was higher in males than in females. Out of 25 isolates 16 were from males and 9 were from females. Frequency of isolation of Moraxella catarrhalis was more frequently seen in age group 61-70 years. It was most commonly recovered in winter. The most effective antibiotics were amoxicillin-clavulanate and ceftriaxone and least was ampicillin. CONCLUSION: Moraxella catarrhalis isolation from sputum especially in persons above 60 years of age and in the absence of other well established pathogens should not be disregarded as they can cause lower respiratory tract infection in these individuals.

Leptospirosis--a case report.

Outbreaks of Leptospirosis have been reported from various parts of India including Maharashtra. We report a case of leptospirosis from Wardha District, Maharashtra from where the disease has not been reported so far.

Cases of human immunodeficiency virus infection and tuberculosis--early experiences of different aspects.

An outpatients department based survey conducted in Calcutta amongst 1349 established cases of tuberculosis (TB) revealed 0.67% human immunodeficiency virus (HIV) infected cases. Those affected by HIV and TB did not show any deviation from epidemiological pattern of HIV infection in India. All contracted HIV infection by heterosexual route, mostly from Bombay (47.8%) followed by West Bengal (30.4%). In follow-up study of a cohort of 36 HIV seropositives over 3 years, 10(27.7%) developed TB. Of the 23 HIV infected cases with TB, lesions were mostly pulmonary (n = 18, 78.3%) followed by pleural effusion (n = 3;13%). Low incidence of Mycobacterium avium (intracelluarae) complex and tuberculous lymphadenopathy one case each and 52.2% positivity with 14.5 mm mean induration diameter in intradermal test with one TU PPD-RT23 are deviations from previous reports. Low incidence of cough (43.5%), marked weight loss (100%) and fever (100%) were the cardinal clinical features. TB infection on pattern suggestive of reactivation of dormant pulmonary lesions lower rate (11%) of treatment failure and infection caused by organisms other than Mycobacterium tuberculosis were other findings of the study. Importance of serosurveillance to unearth more TB cases amongst HIV infected cases for early treatment and isoniazid prophylaxis is stressed upon.

The efficacy of low-dose oral corticosteroids in the treatment of vitiligo patient.

Autoimmunity is one of the most probable pathogenesis of vitiligo. Systemic corticosteroids may arrest the progression of vitiligo and lead to repigmentation by suppressing immunity. The clinical efficacy of low-dose oral corticosteroids was assessed to minimize the side-effects in actively spreading vitiligo patients. One hundred (100) patients with vitiligo were evaluated. The patients took daily doses of oral prednisolone (0.3 mg/kg body weight) initially as a single oral dose after breakfast for the first 2 months. The dosage was then reduced to half the initial dose during the 3rd month and was halved again for the 4th and final month. After 4 months of treatment, 76% showed repigmentation while the arrest of progression (both repigmentation and stationary) was noted in 90% of patients. Male sex, and patients under 15 years of age showed pronounced repigmentation with statistical significance. According to this study low-dose oral prednisolone is an effective method in preventing progression and inducing repigmentation of fast-spreading vitiligo without the associated serious side-effects.