Avinash Singh

AIIMS · Pathology

Book series on Medical Science gives the opportunity to students and doctors from all over the world to publish their research work in a set of Preclinical sciences, Internal medicine, Surgery and Public Health. This book series aim to inspire innovation and promote academic quality through outstanding publications of scientists and doctors. It als...

Background: The epidemic of coronavirus disease 2019 (COVID-19) has been rapidly spreading on a global scale affecting many countries and territories. There is rapid onset of generalized inflammation resulting in acute respiratory distress syndrome. We, thus, aimed to explore the potential of immune-inflammatory parameters in predicting the severi...

Peritoneal Loose Bodies(PLB) are rare lesions which are often asymptomatic. The exact cause of PLB is unknown. However, it has been postulated that the PLB is thought to develop from a spontaneously deformed and infarcted epiploic appendix within the peritoneal cavity. There is the deposition of intra abdominal fluids on its surface, as well as its...

Gastrointestinal stromal tumor (GIST), is considered as most common mesenchymal neoplasm of the GI tract. They can arise anywhere in the gastrointestinal (GI) tract, with the gastric GIST accounting for 50% to 60% of cases, the small intestinal GIST for 20% to 30%. It arises from the interstitial cells of Cajal, which are part of the muscle plexes...

Strongyloidiasis is a common disease worldwide, has a complex life cycle and infect humans percutaneously. We report case of 46-year-old woman, presented with complaints of abdominal pain, and distension. She was on PPI (Proton Pump Inhibitors) for recurrent gastritis. She also gives history of steroid intake for joint pain. USG abdomen showed mode...

Early T-cell Precursor Acute Lymphoblastic Leukemia (ETP-ALL) is a subtype of T-ALL/LBL which is derived from thymic cells at the early T-cell precursor (ETP) differentiation stage that have the potential to differentiate into multiple lineages, including lymphoid and myeloid. ETP-ALL accounts for 15% of childhood T-ALL and 10-30% of adult T-ALL. I...

The non-specific clinical symptoms of anorectal brownish-black mass do not help to differentiate colorectal cancer, hemorrhoids, rectal ulcers which result in a delayed diagnosis or lead to inadequate management of lethal anorectal melanoma. Primary malignant melanoma of the anorectal region is an uncommon tumor, constituting approximately 1% of an...

Chromoblastomycosis (CBM) is a chronic, granulomatous, mycosis of the skin and subcutaneous tissue produced by the traumatic implantation of various dematiaceous fungi. The most prevalent species (90%) is Fonsecaea pedrosoi. We report a case of a 29 year male presented with complaints of non- healing ulcer since 6-7 months and underwent exploration...

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Mature cystic teratoma (MCT) is the most common benign germ cell tumor of the ovary and contains the different tissues that originate from the endoderm, mesoderm, and ectoderm. The monodermal teratoma has a component of only the germ layer. Ovarian carcinoid is rare and considered as a monodermal teratoma. We report a case of carcinoid tumor arisin...

Eventhough FNAC is the most routinely performed, safe and cost effective diagnostic procedure for an initial diagnosis of thyroid lesions, we often come across difficulties in diagnosis, especially the grey zone lesions of the thyroid. In such cases AgNOR staining can be used as an adjunct to FNAC for establishing a more definitive cytopathological...

Background: Fine-needle aspiration cytology (FNAC) in salivary gland lesions is challenging for the cytopathologists due to diverse morphological pattern and overlapping morphologic features which are responsible for the pitfalls. The present study was conducted to evaluate the efficacy of the Milan system in the diagnosis of salivary gland lesion...