Primary malignant lymphomas of the salivary glands are rare, accounting for 2-5% of salivary gland tumors and 5% of extranodal lymphomas, frequently seen in the parotid gland. There are single case reports mentioned in the literature. Clinical presentation is not characteristic and the disease is often overlooked with delay in diagnosis and treatment. We are reporting a case of bilateral parotid gland lymphoma in a 55-year-old male, presented with bilateral enlarged parotids. Magnetic resonance imaging (MRI) showed bilateral enlarged parotid glands with multiple well-defined intraparotid lesions. Fine Needle Aspiration Cytology (FNAC) of both showed mixed population of lymphoid cells with large monocytoid cells with scant cytoplasm, anisonucleosis with prominent nucleoli, and numerous mitoses suggestive of non-Hodgkin's lymphoma (NHL). Histopathology showed sheets of large lymphoma cells destructing the salivary acini and infiltrating the periparotid fat. Immunohistochemistry (IHC) showed diffuse CD20 positivity, B-cell lymphoma 6 protein (Bcl-6) was focally positive and negative for cluster of differentiation (CD) 3, CD5, CD10, and Multiple myeloma oncogene-1 (MUM1) which led to the diagnosis of NHL-Diffuse large B cell type.
Introduction:Intestinal specimens received frequently are of both non neoplastic and neoplastic lesions. Non neoplastic lesions includes non specific enteritis, congenital anomalies, tuberculosis where as carcinoid and carcinomas are neoplastic lesions. Clinical and radiological findings of these lesions are non specific. Therefore histopathological study is required for the diagnosis. Materials and Methods: One year study was done during the period of June 2016 to May 2017 at M R Medical college, Kalaburagi on 32 intestinal specimens (16 small intestinal and 16 large intestinal).The specimens were processed routinely and special stains were done where ever required. Results: A wide spectrum of intestinal lesions were studied. Congenital anomalies accounted for 22% which included meckels diverticulum(4), heterotopic pancreas (1), jejunal atresia (1) and hirschsprung's disease(1). Inflammatory lesions constituted 53.1% which were mainly chronic non specific inflammation(12), Tuberculosis(4) and diverticulitis(1). Two cases of juvenile polyp, two cases of carcinoid tumor and one case each of ileal lipoma, ileal hemangioma, anal papilloma and signet ring cell adenocarcinoma were reported. Conclusion:A greater awareness of various diseases affecting the intestines and understanding their pathogenesis, on the part of the pathologist is felt necessary for a better diagnosis. Hence a detailed histopathological study of the intestinal specimens should be done in constant correlation with the clinical and radiological findings for an accurate diagnosis.
Introduction:Helicobacter pylori (H.pylori) is associated with many gastro-duodenal diseases like peptic ulcers and gastric adenocarcinoma. Hence, it is important to identify H.Pylori in the endoscopic gastric biopsies. Though Immunohistochemistry (IHC) is time-consuming and expensive, it has shown excellent results and is considered as gold standard method for detecting H.Pylori. Aim: To study the morphological patterns of gastric lesions, different histo-pathological gastric lesions with clinical presentation and the association of H.Pylori using Haematoxylin and Eosin (H&E), Giemsa and IHC staining techniques and their efficacy. Materials and Methods: The present study was an observational study conducted at a tertiary care hospital Kalaburagi for a period of 5 years (1 July 2014 to 30 June 2019). All patients were referred to endoscopic section for the biopsy. History was documented and clinical examination was performed. For the retrospective cases, clinical details were obtained from medical records section, blocks were retrieved, stained with H&E, Giemsa and IHC, studied, tabulated and results were analysed. Results: A total of 95 samples (mean age 49.74 years) were studied. Male: female ratio was 2.8:1. Most common histological benign lesions were Chronic Active Gastritis (CAG) 23 (24.21%) and Chronic Superficial Gastritis (CSG) 14 (14.73%). Malignant tumours were seen in 23 cases, among which moderately (39.13%) and poorly differentiated (39.13%) adenocarcinoma was the commonest. H pylori was identified by IHC in benign and malignant lesions in 20 (23.53%) and 01 (4.35%), respectively. Sensitivity and specificity of H&E and Giemsa was 57.14%, 66.67% and 100%, 100%, respectively. Positive Predictive Value (PPV) was 100% for both stains and Negative Predictive Value (NPV) was 89.16% and 91.36% for H&E and Giemsa. Conclusion: The present study highlights the utility of IHC in detecting H.Pylori in gastric lesions as inflammation and other factors are known to affect the detection rate by H&E and Giemsa staining methods. Hence, IHC can be considered as the best method in detecting H.pylori.
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