Splenosis mimicking a left renal mass.

Intrahepatic and widely distributed intraabdominal splenosis: multidetector CT, US and scintigraphic findings

“…Extraperitoneal locations have also been reported such as retroperitoneal, intrahepatic [4][5][6], renal [7], thoracic, either parenchimal, pleural or pericardic [8][9][10] and subcutaneous [11]. A unique case of cerebral spleen has been described so far [12].…”

Contribution of Tc-99m RBC SPECT/ CT in Intrahepatic and Peritoneal Splenosis Mimicking Malignancy

“…Although abdominal splenosis is frequently asymptomatic, it can present with hemorrhage, pain secondary to infarction or torsion, or obstruction of the intestinal or urinary tract [1,4]. They can be confused with other entities including peritoneal carcinomatosis, endometriosis, renal cancer, abdominal lymphomas, metastatic disease and hepatic adenomas [5][6][7][8][9][10][11][12]. Sonographic and radiological fi ndings are not specifi c in splenosis, so ultrasound, CT, and MRI show limited value in the diagnostic management of abdominal splenosis [7].…”

Pelvic splenosis mimicking ovarian metastasis of breast carcinoma: a case report

“…Investigation in mice showed that growth of ectopic splenic tissue can be affected if splenectomy is incomplete and the circulating mediators released by the residual spleen are active (6). The pathogenesis of splenosis commences at the time of splenic rupture or splenectomy, when the splenic pulp disperses into the peritoneal cavity (9,11). It is supposed that the number of nodules of ectopic splenic tissue that develop in the peritoneal cavity correlates with the severity of splenic injury.…”