[Langerhans cell histiocytosis].

Histiocytoses originate from the proliferation of mononuclear phagocytes in different tissues. These entities make up a heterogeneous group, and are mainly classified as Langerhans cell histiocytoses and non-Langerhans cell histiocytoses. Langerhans cell histiocytoses have as a common characteristic the proliferation of dendritic antigen-presenting cells with phenotypical and ultrastructural characteristics of Langerhans cells.

[Effects of HIV status and other variables on the outcome of tuberculosis treatment in Spain].

Objective: To analyze the effect of human immunodeficiency virus (HIV) status and other variables on the outcome of tuberculosis treatment in Spain.

Patients And Methods: Multicenter retrospective cohort study in 6 autonomous communities of Spain (from May 1996 to April 1997). Data on treatment outcome were collected for new cases of tuberculosis in accordance with European guidelines.

Acrokeratosis paraneoplastica: Bazex syndrome.

Bazex syndrome is a paraneoplastic dermatosis characterized by acral psoriasiform lesions associated with an underlying neoplasm. We present the case of a 64-year-old patient that was diagnosed with squamous cell lung carcinoma after being evaluated for lesions compatible with paraneoplastic acrokeratosis. With a high frequency Bazex syndrome is the earliest marker of an underlying subclinical neoplasm.