RESUMO
Context: Trichobezoars (TB) are bezoars formed by ingested hair. TB are more common among girls and young women. The findings include a hard, mobile and painless abdominal mass in the epigastrium, anorexia, nausea and vomiting, weight loss and reports of thichophagia. Image abdominal studies can confirm the diagnosis. The treatment is based on the complete TB remotion.Case report: M.O.M., 16 years old, female, single, student, born and living in São Paulo. She reported anorexia, abdominal discomfort, halitosis and mild colicky abdominal pain associated with a lump three years ago. On examination: huge, non-tender, mobile, painful, palpable mass in the upper abdomen (13cm) without inflammatory sign. Plain films of abdomen: diffuse radiopaque mass in upper abdomen without gastric bubble. Abdominal ultrasound and computadorized tomography show enlarged stomach filled by heterogeneous material. Endoscopy demonstrates the stomach completely filled with black hair. Once the diagnosis was made, surgical treatment was indicated.