副腎myelolipoma自験例1例と外科的切除例79例に関する文献的考察

Abstract

The patient was a 44-year old woman, who had undergone a medical examination. US showed accidentally a gall bladder stone and a high echogenic mass between the right kidney and the liver. There were no abnormal findings in the laboratory data, including hormone assays. The mass showed fat density with partial calcification on CT scan and hypovascularity on angiogram. The image of the area was not altered by enhancement. NMR revealed a round homogenous tumor surrounded by a smooth capsule. The mass was diagnosed as a benign non-functioning right adrenal tumor. At surgery, a 4.0×3.9×2.9 cm, 90 g, encapsulated tumor was removed. Pathological findings comfirmed the diagnosis of adrenal myelolipoma, composed of myeloid and fatty elements. Myelolipoma of the adrenal gland is a rare non-functioning benign tumor consisting of fat cells and bone marrow element. To our knowledge, only 87 resected cases of adrenal myelolipoma have been reported in the world including 19 cases in our country.