Retroperitoneal well-differentiated liposarcoma presenting as an incarcerated inguinal hernia.

A 69-year-old man was admitted with a complaint of left irreducible inguinal mass. On surgical exploration no evidence of hernia was found and the inguinal floor was overwhelmed by a large lobulated mass, arising from the properitoneal fat, that involved the spermatic cord. The mass was partially removed, sparing the elements of cord. The transversalis fascia was repaired by direct suture and a polypropylene mesh was located above. The histopathological diagnosis was well differentiated-type liposarcoma with myxoid features. The liposarcoma is a malignant tumour of the adipose tissue that arises from the primitive mesenchymal cells. These neoplasms have been usually found in the soft tissues of limbs, trunk, mediastinum, retroperitoneum and occasionally in the spermatic cord. The clinical aspect is frequently a complaint of scrotal or inguinal painless mass, mimicking to an inguinal hernia and the diagnosis of tumor is performed mainly during surgery, as in our patient. In the case of a firm not reducible painless inguinal mass without signs and symptoms of bowel obstruction, an abdominal tumor with inguinal or scrotal extension should be suspected and preoperatively excluded. The US and CT scan may be helpful to plane a correct therapeutic strategy before intervention.