Lymphoblastic lymphomas (LBLs) are uncommon malignant neoplasms derived from immature T‐ or B‐lymphoid progenitor cells. Although cutaneous involvement may reach 33% in B‐LBL, only 12 cutaneous cases of T‐LBL have been published. We report the case of a 49‐year‐old woman with 2‐month history of erythematous‐violaceous plaques in the sternal region and breasts. Histopathologic examination showed a dense monomorphus infiltrate in dermis and positive immunostainings for CD3, CD99 and terminal deoxynucleotidyl transferase, thus indicating T‐LBL. Staging work‐up only revealed a mediastinal mass at diagnosis. After a 51‐month follow‐up and different treatment regimens, the patient remains alive although she has presented four relapses, all of them extramedullary.
Vesicular pattern in GD is described exclusively from a histopathological point of view, and it is defined as the presence of an intraepidermal vesicle filled with plasma and with dyskeratotic cells in the upper part of the vesicle. After reviewing all the described cases, pseudoherpetic GD presents the same histopathological features than vesicular GD, but authors paid attention to the presence of grouped acantholytic cells mimicking multinucleated cells of herpes infection. The authors consider that the so-called pseudoherpetic GD is a vesicular GD, where clinical suspicion of varicella raises this differential diagnosis and leads us to check viral nuclear cytopathic changes, and the authors favor the use of vesicular GD in the dermatopathologist report.
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