Diagnostic Evaluation of Patients Presenting with Rectal Bleeding by Colonoscopy

Introduction Rectal bleeding indicates the bleeding from lower gastro-intestinal tract occurring distal to ligaments of Treitz. Annual incidence of per rectal bleeding has been estimated to be 20% . Colonoscopy is the examination of choice for investigation. The objective of this study is to know the diagnostic yield of colonoscopy in cases with per rectal bleeding and to know the common causes of per rectal bleeding in adults MethodsOne hundred and twenty-nine adult patients, age more than 18years, who presented to Surgical OPD and ward of Dhulikhel Hospital during the year 2018 and 2019 were taken for the study irrespective of their sex. All the patients were subjected to fibre-optic colonoscopy after necessary preparation and the findings were recorded. Diagnosis was based on colonoscopic and histopathologic findings. ResultsA total of 129 (77 male and 52 female )patients with per rectal bleeding were evaluated with colonoscopy. The age ranged from 18 years to 79 years with the mean age 42.25 (SD+/- 15.29). Colonoscopy showed abnormalities in 102 patients (79.06%). The most common finding was hemorrhoids in 36 patients (27.90%) followed by colorectal malignant mass in 20 patients (15.50%). Polyps were diagnosed as the cause of rectal bleeding in 14 patients (10.84%). ConclusionColonoscopy has good diagnostic yield at evaluating cases with per rectal bleeding. Hemorrhoids, colorectal malignant mass and polyps are the common causes producing PR bleeding in Nepalese adult population.

Hyperreactio leuteinalis: benign tumour associated with pregnancy mimicking ovarian malignancy

Hyperreactio leuteinalis refers to pregnancy related enlargement of B/L ovaries rarely unilateral ovary, moderate to marked size due to multiple theca leutein cysts. It is a rare finding associated with pregnancy seen commonly in multiple gestation, GTDs and fetal abnormalities: viz hydrops. It is caused by elevated B-hcg level. We report a case of 28 years old female, primi with 13 spontaneously conceived weeks pregnancy who presented to ANC OPD for regular check-up and vague abdominal discomfort. USG revealed a large right sided ovarian mass, solid cystic in appearance pushing the uterus to left side and upwards. Staging laparotomy was done at 14 weeks viewing it to be a malignant mass. Unilateral right sided oophorectomy was done along with biopsy taken from left ovary. On microscopic histological examination diagnosis of hyperreactio leuteinalis unilateral ovary was made. Hyperreactio leuteinalis mimicking ovarian malignancy on USG results in unnecessary surgical intervention.

Deep Learning for Breast Cancer Diagnosis from Mammograms—A Comparative Study

Deep convolutional neural networks (CNNs) are investigated in the context of computer-aided diagnosis (CADx) of breast cancer. State-of-the-art CNNs are trained and evaluated on two mammographic datasets, consisting of ROIs depicting benign or malignant mass lesions. The performance evaluation of each examined network is addressed in two training scenarios: the first involves initializing the network with pre-trained weights, while for the second the networks are initialized in a random fashion. Extensive experimental results show the superior performance achieved in the case of fine-tuning a pretrained network compared to training from scratch.