Rare adrenal incidentaloma: ganglioneuroma.

Ganglioneuroma (GN) is a rare, benign neurogenic tumor that develops from sympathetic ganglion cells. It occurs mainly in the retroperitoneal region. Adrenal localization is rare.

Retroperitoneal Schwannoma: Case report.

Schwannoma is a rare benign tumor that comes from the SCHWANN cells that sheath the peripheral nerves. Retroperitoneal location is even rarer than the frequency of this neoplasia. The diagnosis is immuno-histochemical and the treatment is surgical.