[Surgical treatment of a patient with liver endometriosis]

Endometriosis is a functioning endometrial tissue outside the inner layer of the uterine wall. Liver endometriosis is one of the rarest forms of atypical endometriosis. In this article, we report a patient with this disease. A 59-year-old patient complained of heaviness and periodic pain in the right hypochondrium for more than a year. Previous contrast-enhanced CT revealed signs of cystic-solid hypovascular mass lesion in the right liver lobe. Histological examination revealed no reliable signs of tumor growth. According to control CT after 8 months, no significant changes were observed. Surgical treatment was indicated and atypical liver resection was performed. Histological examination revealed cystic endometrioid lesion. Liver endometrioma is a rare disease with unclear pathogenesis. Diagnosis is difficult due to uncharacteristic clinical manifestations and no specific markers. Liver endometriosis should be considered in differential diagnosis of liver lesion. Surgical treatment is preferable due to the risk of malignant transformation.