Abstract
A case of a 36 year old female with a cervico-mediastinal thymic cyst is presented. The cyst measured 5×4×3.5cmand was filled with transparent serous fluid. Histologically the cyst was characterized by a thick hyalinized cyst wall beneath a thin layer of epithelial cells, fat tissue and thymic tissue containing Hassall's corpuscles. Before surgery ultrasonography as well as computed tomography were useful for determining the extent of the cyst and providing a differential diagnosis.
