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March 1990

Primary Cutaneous Lymphoblastic Lymphoma of Non-B, Non-T Phenotype

Arch Dermatol. 1990;126(3):400-402. doi:10.1001/archderm.1990.01670270132028

To the Editor.—  Lymphoblastic lymphoma (LBL) is a tumor of lymphoid precursors with a lymphomatous presentation. For many authors the distinction between acute lymphoblastic leukemia (ALL) and LBL is somewhat arbitrary: Lymphoblastic lymphoma and ALL are variants of the same disease. Cutaneous localizations are seen in 16% of LBL at the first examination,1 but are rarely the only single presenting finding (so-called primary cutaneous LBL). Therefore, we describe a case of primary cutaneous LBL with its clinical, histological, and immunological aspects.

Report of a Case.—  A 22-year-old woman was seen who had an indurated and infiltrated purplish plaque on her left cheek for 2 years. This plaque remained stable during the 2-year period. Many dermohypodermal erythematous nodules of 2 to 3 cm in diameter appeared within a few weeks; these nodules were localized to the shoulders, forearms, right buttock, and thighs. The lesions were painful and the patient complained

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