No abstract

Angioimmunoblastic T-cell lymphoma (AILT) is an aggressive peripheral T-cell lymphoma that is frequently accompanied by a cutaneous eruption. The cutaneous findings most commonly consist of a maculopapular eruption on the trunk. However, purpura, infiltrated or urticarial plaques, papulovesicular lesions, nodules, and erythroderma have also been reported. Histologic findings in the lymph node are characteristic, while those in the skin may show one of four patterns. Here, we review the previously reported histologic patterns and present a case of AILT involving the skin with a unique histologic appearance of necrotizing granulomas with abundant histiocytes and eosinophils, mimicking an infectious etiology.

No abstract

Cutaneous plasmacytosis is a rare disorder that typically affects middle-aged to older individuals of Asian, particularly Japanese, descent. Clinically, it is characterized by multiple asymptomatic red-brown plaques and nodules on the trunk. Lymphadenopathy and hypergammaglobulinemia may be present. Histologically, the lesions show a moderately dense superficial and deep perivascular infiltrate composed predominantly of mature plasma cells without atypia or light chain restriction. We report our experience with five additional cases, including results of immunohistochemical studies for human herpes virus 8.