BackgroundPrimary melanoma of the small bowel is extremely rare. Only a limited number of cases have been described in the literature. Mostly, the small intestine is affected by metastatic tumors of other primary lesions, especially cutaneous.Case presentationWe report the case of a 75-year-old North African woman with a small bowel melanoma. The diagnosis was made by histological examination and immunohistochemical profile matching after a segmental small bowel resection. Postoperative investigations looking for cutaneous, gastrointestinal or ocular primary lesions found no abnormalities.ConclusionsThe diagnosis of primary small bowel melanoma can be retained although it remains difficult to exclude the possibility of metastatic melanoma.

Trichobezoar is a rare condition that occurs mostly in young women with psychiatric disorders such as trichotillomania and trichophagia. We report the case of a giant gastric trichobezoar in a 21-year-old woman who presented with chronic abdominal pain, vomiting and weight loss. Abdominal examination revealed a large epigastric mass. Endoscopic and imaging findings were highly suggestive of a gastric trichobezoar. Surgical extraction of the huge hair mass was successfully performed through an open gastrotomy. Postoperatively, history of a neglected chronic depression with suicidal ideation was diagnosed. Consequently, the patient was referred to the psychiatric department for mental healthcare, to prevent trichobezoar recurrences.

Hydatid cyst of the liver remains a frequent parasitic disease caused by the development of the larval form of Echinococcus granulosis; it is often discovered incidentally during routine symptoms, rarely at the stage of complications. However, the diagnostic difficulties and pitfalls are numerous due to the differential diagnosis of the liver's cystic lesions, despite the current improvement of cross-sectional imaging (ultrasound, CT and MRI). We report a case of a hydatid cyst of the liver discovered during a secondary infection, emphasizing the contribution of imaging and serology that can confirm the diagnosis before starting any therapeutic procedure.