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Chronic cutaneous lupus erythematosus is a polymorphous autoimmune disease which may mimic some other clinical conditions, causing diagnostic difficulties. Acneiform lesions, including comedones and pitting scars are occasionally atypical presentations of cutaneous discoid lupus erythematosus.

O'Brien's actinic granuloma is a rare skin disease. Controversy continues over whether it should be considered a specific condition or a form of granuloma annulare located in sun-exposed areas. Its pathogenesis is unknown; however, the most widely accepted hypothesis suggests that solar radiation is the triggering factor. This paper describes the case of a 78-year old, fair-skinned male, who presented with a 10-year history of an infiltrate of annular erythematous papules on his forehead and left malar region. The diagnosis of O'Brien actinic granuloma was established from histopathology, since the clinical condition of the patient was extensive, unlike cases reported in the literature.

A case of Dühring-Brocq with high titres of ANA is reported. It was not possible to demonstrate a SLE. The associations DH-SLE, blistering diseases-SLE, ANA-DH are reviewed.

This is our second paper about the Kveim test performed with G-77 antigen obtained from sarcoid lymph nodes. The antigen was tested in 46 patients with proved or suspected sarcoidosis and in 50 controls. Results were: 1) In 27 patients with active proved sarcoidosis and without treatment the test was positive in 85,1% (23/27 patients); 2) In 2/3 patients with proved sarcoidosis after therapeutic remission for more than two years and without treatment presently, the results were positive in one of them; 4) In 14 patients suspected to have sarcoidosis but showing lesions only on the skin the test was positive in 58,1% (8/14 patients); 5) In 48 controls the test was negative but in 2 it was positive. Our results agree with those of the literature.