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Resumen Los farmacos inhibidores del factor de necrosis tumoral alfa (anti-TNF alfa) son ampliamente utilizados en diversas especialidades medicas. El principal efecto adverso de estos farmacos es el aumento del riesgo de infecciones. Presentamos el caso de un varon de 30 anos con espondilitis anquilosante, en tratamiento desde hacia 2 semanas con golimumab, que consulta por lesiones asalmonadas en tronco, palmas y plantas de 10 dias de evolucion. Con la sospecha de un secundarismo luetico se solicitaron pruebas treponemicas y no treponemicas que confirmaron el diagnostico. Asimismo se solicito una puncion lumbar, aunque no existia sintomatologia neurologica, para descartar neurosifilis. Los casos de sifilis en pacientes en tratamiento con anti-TNF alfa son excepcionales en la literatura y no hay protocolos establecidos que nos guien sobre como actuar ante esta situacion.

Palmoplantar epidermoid cysts can range in clinical presentation from an asymptomatic slowly enlarging mass to a painful nodule. We report two cases: an epidermoid cyst on the sole and another on the palm. This article reviews the possible etiology, diagnosis, and prognosis of palmoplantar epidermoid cysts.

Alopecia induced by biological therapy is a rare side effect of this type of drugs. A total of 23 patients of psoriasiform eruptions with severe scalp involvement that induced alopecia during anti-tumor necrosis factor (anti-TNF) treatment of non-dermatological conditions have been previously reported. We present a 50-year-old man affected by plaque psoriasis that developed psoriasiform patches with alopecia over his scalp 10 months after initiating treatment with adalimumab. Punch biopsy of the alopecic area on the scalp revealed psoriasiform epidermal changes and alopecia areata-like dermal changes. Along with these findings, there was a dermal inflammatory infiltrate made up of eosinophils and plasma cells. In conclusion, scalp psoriasiform lesions with alopecia in patients treated with anti-TNF agents have been rarely reported. We describe a patient with anti-TNF therapy-related alopecia affected by psoriasis. Our patient has a peculiar histology with features of psoriasis and alopecia areata in addition to eosinophils and plasma cells. This entity may respond to topical treatment. However in patients of severe scalp involvement anti-TNF suspension should be considered.

Kaposi's sarcoma (KS) associated with AIDS (AIDS-KS) is the most prevalent neoplasia among patients with AIDS. Its incidence has decreased dramatically in recent years due to the widespread use of highly active antiretroviral therapy (HAART). Paradoxically, in relation to the introduction of HAART it may occur a worsening or development of AIDS-KS despite the improvement of the immune function. This unusual process is called immune reconstitution syndrome in Kaposi's sarcoma (IRIS-KS) and should not be confused with a failure of HAART. Early identification of AIDS-KS and previous or combined use of chemotherapy with HAART appears to be the most effective treatment to prevent the consequences of IRIS-SK.