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A Rare Case of Ectopic Liver Presenting as an Intraperitoneal Mass: A Case Report and a Concise Case Review


 
 
 Ectopic liver is a rare developmental abnormality, in which liver tissue is localized outside the normal liver and has no connection to the native liver. The presence of ectopic liver tissue has been reported most commonly in the gall bladder. Intrathoracic cavity, kidney, abdominal wall, and esophagus are the other sites where it has been identified. But its presence in the intraperitoneal has rarely been reported previously. We report such a case in a young female.
 
 
 
 A 27-year-old female presented with shortness of breath and was diagnosed to have pulmonary embolism. On imaging, she incidentally was found to have a well circumscribed 4.4 x 4.8 cm enhancing mass in the left sub- diaphragmatic region wedged between splenic hilum and greater curvature of the stomach. Based on imaging diagnosis of accessory spleen was considered. She underwent a nuclear medicine scan that was not consistent with the accessory spleen. Esophagogastroduodenoscopy identified a mass that showed abutment of the mucosa of stomach. Cytology showed rare polygonal benign cells which were non-diagnostic. A robotic laparoscopic-assisted abdominal mass excision was performed, identifying a mass abutting, but not adherent, to the spleen, pancreas and stomach. Histopathological examination revealed benign liver tissue with several portal triads. Immunohistochemical staining showed positivity for Hepar 1 and arginase; reticulin stain; together supporting it to be a benign hepatic lesion. This was finally diagnosed as benign ectopic liver
 
 
 
 NA.
 
 
 
 Ectopic liver is a rare condition, with an incidence between 0.24%-0.47%. It can be associated with other congenital anomalies but most crucial implication, is the development of malignancy. It is sometimes, difficult to identify ectopic liver on imaging modalities. It is important to be aware of such rare findings for optimal patient care.
