Related Experiment Video
Updated: Aug 14, 2026
Detection of Extravascular Trypanosoma Parasites by Fine Needle Aspiration
Published on: August 7, 2019
Fine needle aspiration diagnosis of a subcutaneous abscess from Enterobius vermicularis infestation. A case report
V K Arora1, N Singh, S Chaturvedi
1Department of Pathology, University College of Medical Sciences, Delhi, India.
Background:
Extraintestinal infestation by Enterobius vermicularis is uncommon. It has been reported to occur in the peritoneal cavity, ovary, fallopian tube, endometrium, lung, liver and urinary tract.
Case Report:
Fine needle aspiration diagnosis was made in a case of enterobiasis presenting with a subcutaneous abscess in the natal cleft. Eggs, as well as fragments of cuticle of the adult worm, were found; the morphology of both was best visualized in Papanicolaou-stained smears. Polarizing microscopy highlighted the equally spaced parallel grooves of the cuticle.
Conclusion:
Fine needle aspiration cytology of subcutaneous abscesses due to enterobiasis can be diagnostic when eggs, or eggs with cuticle, are identified in a suppurative or granulomatous inflammation.
