Related Experiment Video
Updated: Jun 17, 2026

Detection of Extravascular Trypanosoma Parasites by Fine Needle Aspiration
Published on: August 7, 2019
Fine-needle aspiration cytology of subcutaneous toxoplasmosis: A case report
Xiaowei Chen1, Fabrizio Remotti, Guo-Xia Tong
1Department of Pathology, Columbia University Medical Centre, New York, NY 10032, USA. xc2159@columbia.edu
Abstract:
Toxoplasmosis is a common opportunistic infection in patients with AIDS in whom it typically presents as encephalitis, pneumonia, lymphadenitis, and myocarditis. Skin involvement is very rare and, to our best knowledge, Toxoplasma gondii forming a subcutaneous mass has not been reported. Here, we report the findings of an interesting case of subcutaneous toxoplasmosis with the cytological appearance of an inflammatory fibrovascular lesion in a HIV-positive patient and discuss the differential diagnosis.
