CGD-TCL was diagnosed by histopathology, immunophenotype, in situ hybridization and analysis of TCR? genes rearrangement.     ///    " Primary cutaneous ??-T-cell lymphoma (CGD-TCL) is a distinct disease entity which is an extremely rare neoplasm with poor prognosis, characterized by the ?/? T-cell receptor expression on atypical lymphocytes. "    ///    Primary cutaneous ??-T-cell lymphoma (CGD-TCL) with unilateral lower extremity swelling as first-onset symptom: a rare case report..     ///    "To our knowledge, this case is the first report of CGD-TCL with unilateral lower extremity swelling as the first-onset symptom. "    ///    "If patient is presented the first symptoms such as swelling of extremities, especially when ulceration appears, it is of great significance to be considerate about the possibility of CGD-TCL. "