Branca Giovanni, Ieni Antonio, Barresi Valeria, Versaci Antonino
Section of Anatomic Pathology, Department of Human Pathology, Azienda Ospedaliera Universitaria "Policlinico G. Martino", University of Messina, Messina, Italy.
Int Med Case Rep J. 2010 Nov 18;3:81-5. doi: 10.2147/IMCRJ.S13938. Print 2010.
Primary retroperitoneal cysts are rare benign lesions which often present as an incidental radiological finding and also cause abdominal symptoms. A 47-year-old woman was admitted to the surgery unit because of right-sided abdominal pain. Computed tomographic scan investigation confirmed a circumscribed, oval, dishomogeneous mass in the right anterior pararenal space. The final diagnosis was obtained after laparotomy excision and pathological evaluation. Immunohistochemical profile was characterized by positive expression of epithelial cystic cells for CKAE1/AE3, CK7, CK8, and CK18, with EMA sustaining the diagnosis of a benign retroperitoneal cyst of urinary system origin.
原发性腹膜后囊肿是罕见的良性病变，常作为偶然的影像学发现出现，也可引起腹部症状。一名47岁女性因右侧腹痛入住外科病房。计算机断层扫描检查证实右肾前间隙有一个边界清晰、椭圆形、不均匀的肿块。经剖腹手术切除及病理评估后得出最终诊断。免疫组化特征为上皮性囊肿细胞对CKAE1/AE3、CK7、CK8和CK18呈阳性表达，EMA支持泌尿系统起源的良性腹膜后囊肿的诊断。
