Abstract
A very rare case of enteric cyst arising in the retroperitoneum is described here, with some discussion on the relevant literature.
A 21-year-old Philippine woman was seen at the hospital because of an enlarging tumor of the right upper abdomen with right hypochondralgia. The tumor had been pointed out 5 years before, but she asked for no treatment. The patient was suspected to have a hepatic tumor and was admitted to the hospital. Echography revealed an infant-head sized, multilobular cystic mass extending from the subhepatic space to anterior aspect of the right kidney. CT also visualized a low density mass in the same part. Angiography revealed no vessels of the tumor coming from the hepatic artery, but showed only an opressed figure. Malposition of the inferior vena cava to the left was found. The tumor enucleation was performed under a diagnosis of retroperitoneal teratoma. The excised tumor was a cyst weight 2200 g. Histopathologically it was an enteric cyst consisting of adenocytes similar to intestinal epithelial cells presenting with PAS-positive, no malignant picture being seen.
Retroperitoneal enteric cyst is so rate that only 4 cases can be seen in the Japanese literature.
