Parasitology

Enterobius vermicularis Eggs in Cervical Smear

Morphology of Enterobius vermicularis eggs in Papanicolaou-stained endocervical smears: differential diagnosis and causes of contamination.

❗Correct answer: Enterobius vermicularis (pinworm) eggs in the genital tract (endocervical smear).

✅ Pinworm eggs are approximately 60 micrometers long and have a classic asymmetric oval shape, flattened on one side. They typically stain a bright dark orange color in Papanicolaou smears.

✅ These eggs could have been introduced through contamination from the perianal area or may represent an ectopic pinworm infection involving the genital tract. In either case, clinical evaluation and treatment are indicated.

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