Mycobacterium marinum infection: a case report

The infection by Mycobacterium marinum in humans is relatively uncommon. When it occurs, it mainly affects the skin, usually with a chronic, indolent and benign evolution. The diagnosis requires a high index of suspicion, and a significant delay may be observed between the first symptoms to the final diagnosis. This present case reports a M. marinum infection in an immunocompetent patient that had a chronic undiagnosed injury on the dominant hand for at least five years. The patient had several medical consultations, without proper suspicion, hampering adequate diagnostic investigation. Histopathology detected tuberculoid granulomas, but showed no acid-fast bacilli. The culture in appropriate medium and the polymerase chain reaction-restriction enzyme analysis (PRA)-hsp65 confirmed the diagnosis. Treatment with clarithromycin (1 g/day) for three months was effective. Although uncommon, this infection is a contact zoonosis. Therefore, it is important for clinicians to be aware of this diagnosis and properly guide preventable measures to professionals that are in risk group.(AU)

Mycobacterium marinum infection: a case report

The infection by Mycobacterium marinum in humans is relatively uncommon. When it occurs, it mainly affects the skin, usually with a chronic, indolent and benign evolution. The diagnosis requires a high index of suspicion, and a significant delay may be observed between the first symptoms to the final diagnosis. This present case reports a M. marinum infection in an immunocompetent patient that had a chronic undiagnosed injury on the dominant hand for at least five years. The patient had several medical consultations, without proper suspicion, hampering adequate diagnostic investigation. Histopathology detected tuberculoid granulomas, but showed no acid-fast bacilli. The culture in appropriate medium and the polymerase chain reaction-restriction enzyme analysis (PRA)-hsp65 confirmed the diagnosis. Treatment with clarithromycin (1 g/day) for three months was effective. Although uncommon, this infection is a contact zoonosis. Therefore, it is important for clinicians to be aware of this diagnosis and properly guide preventable measures to professionals that are in risk group.

Descrição de um caso exuberante de eritema nodoso hansênico e análise crítica dos sistemas de classificação para tratamento da hanseníase / Description of a lush case of erythema nodosum and critical analysis of classification systems for the treatment of leprosy

A hanseníase é doença endêmica e de notificação compulsória no Brasil. Há diversos sistemas de classificação para instituição da poliquimioterapia. Descreve-se caso de jovem com diagnóstico e tratamento de hanseníase paucibacilar que, após sete anos, retorna com recidiva das lesões e tratamento para multibacilar, evoluindo com eritema nodoso necrotizante.

Leprosy is an endemic and notifiable disease in Brazil. There are several classification systems for institution of multidrug therapy. We describe the case of a young man with diagnosis and treatment of paucibacillary leprosy who, after seven years, returns with lesion recurrence and treatment for multibacillary evolving necrotizing erythema nodosum.