Abstract
A 43-year-old female having felt a sense of fullness in the upper abdominal region lasting from some years before went to a hospital and was indicated to have a right epigastric mass. The patient was introduced to our hospital. From abdominal ultrasonography, CT, and angiography findings, a retroperitoneal cyst was suspected. Operation was performed. The excised specimen was a single, giant cyst with very thin wall, containing about 2, 300 ml of serous fluid. Histologically, the cyst was an adrenal angiomatous cyst.
Adrenal angiomatous cysts are rare, and commonly benign. Conservative treatment such as puncture and aspiration can sufficiently manage, but for giant cyst like this case, surgical operation would be indicated, because of possible risks such as an association of pressure symptoms and spontaneous rupture of the cyst.
