Abstract
A 56-year-old man, tentatively diagnosed as having cardiomegaly, was found to have a large cyst in the left anterior mediastinum. At thoracotomy a multilocular cystic mass containing a colorless serous fluid was found and resected. Histologically, the cyst was lined with flattened epithelial cells, and thymic tissue was present in the cyst's wall; a diagnosis of thymic cyst was made. There were no malignant components or inflammatory changes. Sialylated Lewis X-i (SLX), carbohydrate antigen 19-9 (CA19-9) and tissue polypeptide antigen (TPA) in the cystic fluid were markedly elevated, while the serum concentrations of these tumor markers were within the normal ranges. Immunohistochemical studies showed the epithelial cells lining the cyst to contain CA19-9 and SLX. The findings suggest the tumor markers to have originated in the thymic epithelium lining the cyst.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
