Ectopic hamartomatous thymoma: a case report showing CD99+ lymphocytes and a low proliferation index.
case_report · Level V
Where this comes from
- Record sourced from PubMed, PMID 12946212.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
Ectopic hamartomatous thymoma is a rare benign tumor that consists of spindle, epithelial, and adipose cell elements. We present a case of this lesion arising in the supraclavicular region of a 59-year-old man, including the characteristic immunohistochemical and ultrastructural findings. DNA flow cytometry revealed diploidy with a low proliferation index (6.73%). The tumor contained CD99+ lymphocytes; CD99 (MIC2) can serve as a useful marker of immature T cells. These findings suggest that ectopic hamartomatous thymoma may develop from the third branchial pouch or thymic anlage.
Medical subject headings
- Choristoma
- Hamartoma
- Thymoma
- Thymus Neoplasms