[Fibrous hamartoma of the urachus. Report of a case complicated by strangulation of the stalk].

Of the anomalies affecting the urachus, fibrous hamartoma is an extremely rare pathology. In particular, in adults it is very unusual for this pathology to assume clinical relevance, producing symptoms typical of acute abdomen. Diagnosis is only confirmed by histological examination and it is impossible to diagnose prior to surgery; hamartoma of the urachus shows no peculiar characteristics during radiological and ultrasonographic imaging to allow its precise diagnosis and is usually interpreted as ovarian cysts or another mobile abdominal neoformation in the peritoneal cavity. The case reported here, which is documented by photographic images, contributes to the scarce bibliography on this topic.