Extragonadal germ cell tumour with the "burned out" phenomenon mimicking a retroperitioneal tumour of neurogenic origin.

Objective: To describe a case of retroperitoneal metastasis of a gonadal germ cell tumour with the "burned-out" phenomenon in a 35 year old patient with a suspected diagnosis of retroperitoneal tumour of neurogenic origin.

Methods: With the clinical and radiological suspicion of retroperitoneal tumour of neurogenic origin the tumour was removed, via the retroperitoneal space.

Results: Pathology showed classic seminoma with foci of atypical or anaplastic seminoma, confined to the tissue sample.

[Leiomyoma in Meckel's diverticulum].

Meckel's diverticulum (MD) is a persistent embryonic remnant occurring in 2% of the general population. This entity is usually clinically silent and is only discovered when complications occur. Diagnosis is rarely made preoperatively.