T-Cell Lymphoblastic Lymphoma with Cutaneous Involvement in a Child: A Rare Case Report

Jiaoquan Chen,* Xin Tian,* Nanji Yu, Liqian Peng, Huilan Zhu Department of Dermatology, Guangzhou Institute of Dermatology, Guangzhou, 510095, People’s Republic of China*These authors contributed equally to this workCorrespondence: Huilan Zhu, Department of Dermatology Guangzhou Institute of Dermatology, 56 Hengfu Road, Guangzhou, 510095, People’s Republic of China, Email Zhlhuilan@126.comAbstract: T-cell lymphoblastic lymphoma (T-LBL) is a heterogeneous malignancy derived from T-cells that more commonly affects teens and males. Most commonly, T-LBL exhibits signs of lymph nodes, bone marrow, and mediastinal mass invasion, but in rare cases, the disease manifests cutaneously. We present a case of both cutaneous and systemic presentation of T-LBL in 9-year-old man in which the skin immunophenotype analysis showed TdT expression with positivity of CD3, CD4 and CD99. Review of all currently described cases of cutaneous T-LBL revealed that the most frequently positive tumor markers were TdT (100%), CD3 (100%), CD4 (59.1%) and CD99 (40.9%). Cutaneous involvement may be a prognostic factor in treating T-LBL with chemotherapy.Keywords: T-cell lymphoblastic lymphoma, cutaneous lymphoma, diagnosis