[Comments with respect to 2 patients with anti-Jo 1 antibodies]. / Comentarios a dos enfermos con anticuerpos anti-Jo 1.

Anti-Jo 1 antibodies define a subgroup of patients with polymyositis, which are characterized by the presence of extra-muscular involvement as pulmonary fibrosis, although Raynaud's phenomena, arthritis, tenosynovitis, pleuritis and pericarditis may also be present. Given the fact that extra-muscular signs may precede the clinical diagnosis of polymyositis, as in the two cases that we present here, these antibodies may help us to diagnose the disease before the onset of myositis.

A new presentation of disseminated histoplasmosis in a homosexual man with AIDS.

The clinical and histopathological features and the therapeutic response of a pustular eruption occurring in a homosexual man with Acquired Immune Deficiency Syndrome (AIDS) is reported. The rare cutaneous presentation consisted of mostly circumscribed, tender, tense pustules, associated with erythema, confined to the face and neck. Biopsy of these lesions revealed intracellular round to oval bodies surrounded by a clear space, consistent with Histoplasma capsulatum. Prompt resolution was observed after initiation of amphotericin B therapy. Clinicians are alerted to the occurrence of exotic presentations of this entity and emphasis is given to the need for skin biopsy and culture to avoid delay in diagnosis and failure to initiate appropriate therapy.