Peritoneal Carcinosis in Apparently Benign Cortisol Producing Adrenal Adenoma≥5 cm in Diameter: The Need of Regular Postoperative Surveillance

Abstract

Background:

Clinical and histopathological distinction between benign and malignant adrenocortical tumors can be a challenge.

Methods:

Report on 2 patients with cortisol producing apparently benign adrenal adenomas≥5 cm in diameter with local malignant recurrence and peritoneal carcinomatosis after endoscopic surgery.

Results:

Case 1: The 59-year-old male presented with adrenal hypercortisolism due to a 5.0 cm large adrenal tumor on the left side. A retroperitoneoscopic total adrenalectomy was performed. Histologically, a benign adrenal adenoma (Weiss score 1, Ki-67<2%) was found. 6 months later, the patient developed clinically and biochemically recurrent disease with recurrent tumor in the left adrenal region and peritoneal carcinomatosis. The patient died 5 months after second surgery.

Case 2: The 32-year-old female was pregnant in 27^th week when presenting with adrenal hypercortisolism due to a 5.5 cm large adrenal tumor on the left side. She was operated on using a laparoscopic approach and a total adrenalectomy was carried out. Histological examination revealed a benign adrenocortical adenoma (Weiss score 1, Ki-67<5%). 4 years later, the patient came back with clinically and biochemically recurrent disease. Imaging showed a 10 cm large tumor in the left retroperitoneum and a diffuse peritoneal carcinomatosis. The patient died 2 months after diagnosis.

Conclusion:

Cortisol producing adrenal tumors≥5 cm in diameter are at risk to be misdiagnosed as apparently benign. Regular surveillance should be considered in patients presenting with large cortisol producing tumors.

Key words

adrenal cushing disease - malignant recurrence - postoperative surveillance

• References

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