Incidentally Detected Muscular Sarcocystis with Ewing's Sarcoma: A Case Report of a Rare Combination
Year: 2021
Type: article
Study design: Case Report
Abstract: Case Report IntRoductIonSarcocystis gets its name from "sarcomere" as it was first reported as a thread-like cyst in striated muscles of a house mouse and was initially named Miescher's tubules after its discoverer.[1] It has now been recognized as a protozoan of the phylum Apicomplexa as the protozoa possess an apical complex structure involved in penetrating the host cells.Other apicomplexan protozoans include Toxoplasma, Babesia, Plasmodium, Cryptosporidium parvum, and Isospora belli.[2] Previously, this protozoan infection was considered rare, due to undiagnosed cases and nonspecific symptoms.However, the incidence of human infection is rising in Southeast Asia.Histopathology is an important method for the diagnosis of muscular infection in an intermediate host.The exact prevalence of muscular sarcocystis is still not known due to the paucity of reported cases, due to probable nonrecognition of the parasite on histology.We report a case of extra-skeletal Ewing's sarcoma with a coexistent muscular sarcocystis infection. case RePoRtA 27-year-old patient presented to our outpatient department with a gradually progressing right arm swelling.On fine-needle aspiration cytology, it was reported as a small round cell tumor and thus the patient was posted for surgical excision.The patient underwent wide local excision on August 25, 2020, and was sent to us for frozen section reporting of margins and definitive histopathological diagnosis. Gross descriptionWe received a skin covered tissue piece measuring 13 cm × 12 cm × 6.5 cm.Overlying skin measured 11 cm × 11 cm.Undersurface was covered with fat skeletal muscles and fascia.On cut, a grayish-white growth was identified which measured 7 cm × 5 cm × 4 cm.Cut surface showed areas of hemorrhage and necrosis [Figure 1].
Source: Apollo Medicine
DOI: 10.4103/am.am_132_20
Authors: Kavita Somani, Pretty Singh
Language: English
Subfield: Parasitology
Field: Immunology and Microbiology
Domain: Life Sciences
Open Access status: diamond
OpenAlex ID: W3133498464