Ki-1-positive cutaneous large cell lymphoma of T cell type: report of an indolent subtype.

T cell lymphomas that demonstrate skin involvement include not only mycosis fungoides and Sézary syndrome but also a wide variety of other T cell neoplasms. Whether any specific clinicopathologic associations exist for nonmycosis fungoides/Sézary syndrome cutaneous T cell lymphomas is not known, and whether they represent distinct entities or a spectrum of a similar disease process also is not known. We describe a patient with a localized cutaneous large cell lymphoma with a Ki-1-positive "aberrant" T helper/inducer phenotype. Clonal rearrangement of the T cell receptor gene was documented. Although these histologic characteristics and immunophenotype are usually associated with high-grade lymphomas, the patient appears clinically to have a much less aggressive neoplasm. The possible relationship of this overt lymphoma to lymphomatoid papulosis is discussed.

Folliculitis ulerythematosus reticulata: a report of four cases and brief review of the literature.

Folliculitis ulerythematosus reticulata (FUR) is an uncommon genodermatosis best classified as one of the keratosis pilaris atrophicans group of disorders. It is characterized by erythema and follicular plugging of the cheeks that evolves into honeycomb atrophy. Associated cutaneous and visceral abnormalities can occur. This report describes four patients with FUR, one with an unaffected twin, a finding not previously reported. The significance of an early and accurate diagnosis is emphasized.

Cytophagic histiocytic panniculitis. A variant of malignant histiocytosis.

This report describes a patient with cytophagic histiocytic panniculitis in which the aggressive use of chemotherapeutic agents resulted in an apparent remission. The histiocytic nature of the process was confirmed by immunohistochemical techniques. There are many similarities with malignant histiocytosis, and it is believed that this entity should be regarded as a variant of malignant histiocytosis.

Genital benign chronic pemphigus (Hailey-Hailey disease) presenting as condylomas.

BACKGROUND: Genital lesion sof benign chronic pemphigus (FBCP)(Hailey-Hailey disease) may present as verrucous papules. Genital warts and papular acantholytic dyskeratosis of the genitalia may be considered in the differential diagnosis. OBJECTIVE: Our purpose was to describe the clinical characteristics and histologic features of verrucous anogenital FBCP. METHODS: Six patients, five women and one man, with verrucous anogenital lesions of FBCP, initially diagnosed as warts, were examined and biopsy specimens were evaluated histologically. RESULTS: The lesions were located exclusively in the perineal and perianal regions with axillary involvement in one case. Family history was negative in three of the six cases. Histologic examination confirmed the diagnosis of FBCP but was significant for the absence of crusts and the presence of only minimal inflammation. CONCLUSION: Our cases and the literature are reviewed with the conclusion that all verrucoid genital lesions with the histologic characteristics of Hailey-Hailey disease may represent FBCP.