Two children with cutaneous convoluted lymphoblastic lymphoma are reported. Malignant cells from both patients contained cytoplasmic Mu heavy chains characteristic of pre-B-cells and expressed CALLA and la antigens as well. Most cases of convoluted lymphoblastic lymphoma are T-cell-derived neoplasms. The non-T, non-B phenotype found in these two children demonstrates that histology does not nec...

Mycosis fungoides is a common form of cutaneous T-cell lymphoma, with characteristic histopathology and chronic clinical course. Vesiculobullous mycosis fungoides is a rare occurrence. Here we present a 55-year-old man with multiple bullous plaques of one year duration who was finally diagnosed as a case of mycosis fungoides.

Primary cutaneous B-cell lymphoma, leg type, is an uncommon and aggressive subtype of Primary cutaneous B cell lymphoma that is recently updated by the World Health Organization–European Organization for Research and Treatment of Cancer classification of cutaneous lymphomas. We present a case of an 80-year-old woman who presented with redness and swelling mimicking cellulitis of her right leg, ...

BACKGROUND Pseudolymphomatous folliculitis is a lymphoid proliferation that clinically and histopathologically mimics primary cutaneous extranodal marginal zone lymphoma of mucosa-associated lymphoid tissue (MALT lymphoma). In this study, we assessed the diagnostic value of three immunohistochemical markers, programmed death-1 (PD-1), CD1a and S100. METHODS We evaluated 25 cases of cutaneous ...

AGS: Aicardi-Goutieres syndrome CTCL: cutaneous T-cell lymphoma SAMHD1: SAM domain and HD domaincontaining protein 1 SAMS: stroke, aneurysm, moyamoya, and stenosis SLE: systemic lupus erythematosus INTRODUCTION Mutations in the SAMHD1 (SAM domain and HD domainecontaining protein 1) gene are implicated in SAMS (stroke, aneurysm, moyamoya, and stenosis) association, also described as AicardiGouti...

MCL: mantle cell lymphoma INTRODUCTION Cryptococcus neoformans is an encapsulated, ubiquitous fungus that can infect the skin. Cutaneous Cryptococcus usually occurs after dissemination of a respiratory infection but can result from direct contact to the skin. Although classically seen in HIV-infected patients, cryptococcal infections also occur in HIV-negative individuals with or without other ...

Subcutaneous panniculitis-like T-cell lymphoma (SPTCL) and primary cutaneous gamma delta T-cell lymphoma (PCGD-TCL) were initially both classified as subcutaneous panniculitis-like T-cell lymphoma. In 2008, SPTCL with alpha-beta T-cell receptor subtype was separated from primary cutaneous gamma delta T-cell lymphomas (PCGD-TCL). We report four pediatric cases that demonstrate the heterogeneity ...

We herein present the imaging findings in a case of diffuse primary cutaneous B-cell lymphoma of the cranial vault with orbital and brain invasion. MR imaging revealed first concomitant orbital and parenchymal invasion in a case of primary diffuse non-Hodgkin lymphoma of the cranial vault. Contrast-enhanced MR imaging revealed a diffuse mass in the scalp of the frontoparietal region bilaterally...

The primary cutaneous marginal zone B cell lymphoma is a small B cell lymphoma, including cells of the marginal zone, lymphoplasmacytic cells, and plasma cells. Clinically it manifests as erythematous or erythematous-violaceous papules, plaques, or nodules, single or multiple, most often located to the extremities. Its course is usually indolent, with a survival at 5 years of approximately 97 p...