Mycosis fungoides: cutaneous T-cell lymphoma.

Mycosis fungoides (MF) is the most common group of cutaneous T-cell lymphomas. It is a rare non-Hodgkin’s lymphoma of mature, skin-homing, clonal, malignant T lymphocytes, usually observed in mid to late adulthood, that initially presents in the skin as patches, plaques, tumors, or generalized erythema (erythroderma) and can involve the lymph nodes and peripheral blood. In this review, we survey the MF literature of the last decade and highlight the major trends.

Hydroa vacciniforme: a very rare photodermatosis.

Hydroa Vacciniforme (HV) is a rare, acquired and chronic paediatric disorder that is characterized by photosensitivity and recurrent crops of skin lesions on sun-exposed skin, such as the face, ears and hands that heal with vacciniforme scarring. The pathogenesis of HV is unknown. No chromosome abnormality has been identified so far. HV patients have no abnormal laboratory results. The histopathologic features are distinctive and demonstrate intraepidermal multilocular vesicles and cellular necrosis. Most cases remit spontaneously by late adolescence.