Quiste endotelial suprarrenal simulando tumor GIST gástrico

Introduction

Adrenal cysts are usually benign, unilateral, and nonfunctioning. They have a 0.06-0.18% incidence, are more frequent in women, and they mainly present between the fifth and sixth decades of life. The malignization rate is under 7%.

Clinical case

A 66-year-old man sought medical attention for discomfort in the left flank and hypogastrium associated with slight weight loss. An abdominopelvic computed axial tomography study revealed a tumor with extraluminal, exophytic growth located between the gastric fundus and the pancreas and measuring about 4.6 cm in diameter. Due to the suspicion of a gastric gastrointestinal stromal tumor, laparoscopic surgical treatment was decided upon. After the retroperitoneal dissection of the mass, its dependence on the left adrenal gland was observed. It was enucleated up to the dissection of its implantation base. The histopathology study confirmed that the retroperitoneal tumor was an endothelial cyst of the adrenal gland.

Conclusions

In our case, the intervention was more complex than expected, given that it involved a detailed dissection of the cyst at the aorta and the splenic artery. The result was favorable, despite the fact that initially the lesion was not thought to be an adrenal one.