Oxyuriasis is an intestinal parasitosis, frequent, strictly human, caused by a cosmopolitan roundworm: Enterobius vermicularis. Pinworms are mainly localized in intestine but can sometimes be found in the female genitalia, even if it is rare. Our case is a young man of 32 who has an anterior history of inconstant anal pruritus but and who presented a pruriginous and painless subcutaneous nodule and who benefited from an excisional biopsy whose pathological examination revealed the presence of sections of nematodes corresponding to female pinworms within a fibro-fatty tissue. Oxyuriasis is mainly intestinal, sometimes with an uro-genital location, especially in women, but no case has been described at the subcutaneous level, hence the interest of this work in revealing new possible locations of this parasitosis