Abstract
Enterobius vermicularis is one of the most common parasites found in the intestine of humans. The gravid female worms migrate outside the anus to release eggs on the perianal skin. Rarely, they migrate to the genitourinary tract in female patients. We present a case in which pinworm eggs were found in a cervicovaginal smear of a 37-year-old woman.
The eggs were elongated oval shaped and flattened on one side. The thick, double contoured birefringent shell stained bright yellow or orange. Some coarsely granular embryos or curved larvae were enclosed in the refractile shell. Empty eggs or wrinkled shells with clumped granular material were also present. Although pinworm eggs are easily identified because of their characteristic morphologic appearance, careful screening is needed due to the frequent masking by inflammatory cells.
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- High case enterobiasis in school children and potential eggs distribution on the bed
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Journal of Microbiology & Experimentation.2022; 10(1): 33. CrossRef - Enterobius vermicularis larvae in urine sample of female student: The first case report in Indonesia
Didik Sumanto, Sayono Sayono, Puji Lestari Mudawamah
Journal of Microbiology & Experimentation.2021; 9(1): 1. CrossRef - Vaginal Enterobius vermicularis diagnosed on liquid‐based cytology during Papanicolaou test cervical cancer screening: A report of two cases and a review of the literature
Chun‐Yi Tsai, Rachel Junod, Martine Jacot‐Guillarmod, Charles Beniere, Sonia Ziadi, Massimo Bongiovanni
Diagnostic Cytopathology.2018; 46(2): 179. CrossRef - Recurrent paediatric pinworm infection of the vagina as a potential reservoir for Enterobius vermicularis
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Journal of Helminthology.2014; 88(3): 381. CrossRef