Non-invasive evaluation of a liver mass in a patient post splenectomy.

INTRODUCTION: Numerous conditions may cause liver lesions, solitary or multiple, benign or malignant. It can be crucial to establish the correct diagnosis. Splenosis is a rare condition that may result from the spillage of cells from the splenic pulp following abdominal trauma, accidental lesions to the spleen during operation or elective splenectomy. These splenic 'implants', which are often multiple, can be located anywhere in the peritoneal cavity, although they are most often found in the left upper quadrant of the abdomen. They may be confused with neoplasms or endometriosis, and may rarely be the cause of small bowel obstruction.

CASE PRESENTATION: A 35-year-old man presented with a hepatic mass, and malignancy was suspected. After extensive investigation, it was diagnosed as splenosis using Tc-99m-labelled heat-denaturated red blood cells scintigraphy, without the need for liver biopsy. We consider this the most effective method for diagnosing splenosis.

CONCLUSION: When splenosis is suspected, Tc-99m-labelled heat-denaturated red blood cells scintigraphy can be used to confirm the diagnosis, and may avoid invasive investigation.