MR-IMAGING OF PRIMARY PANCREATIC LEIOMYOSARCOMA

Primary leiomyosarcoma of the pancreas is a rare neoplasm with only 17 reported cases in the literature. Although the ultrasonic and compute d tomographic appearances have been described, the magnetic resonance features of pancreatic leiomyosarcomas have not. In this report, we de scribe the MR characteristics of a primary pancreatic leiomyosarcoma w hich was an incidental finding on ultrasound. The unenhanced T-1 weigh ted and T-2 weighted images were the most useful in tumour localizatio n whereas the enhanced images actually obscured the tumour within the pancreas. Differentiation from the much more commonly occuring adenoca rcinoma was impossible.