Abstract
Prompt and accurate diagnosis of Nocardia skin infections is important in immunocompromised hosts, especially transplant patients. The sporotrichoid form, which is otherwise known as the lymphocutaneous form of Nocardia skin involvement, can mimic other conditions, including those caused by fungi, mycobacteria, spirochetes, parasites and other bacteria. Delayed or inaccurate diagnosis and treatment of Nocardia skin infections in transplant patients could lead to dissemination of disease and other poor outcomes. Nocardia brasiliensis is a rare cause of lymphocutaneous nocardiosis in solid organ transplant patients with only two other cases reported to our knowledge. This case describes a middle-aged man, who presented 16 years post kidney transplant. He developed a sporotrichoid lesion on his upper extremity one week after gardening. Ultrasound showed a 35-cm abscess tract on his forearm, which was subsequently drained. Nocardia brasiliensis was isolated from pus culture and he was treated successfully with amoxicillin/clavulanate for 6 months. A review of the relevant literature is included.
Highlights
Sporotrichoid nocardiosis, which is known as the lymphocutaneous form of nocardiosis, is a distinct type of cutaneous Nocardia infection
Sporotrichoid nocardiosis is characterized by the inoculation of the Nocardia bacteria into the skin, which subsequently leads to characteristic lesions distributed along lymphatics in a similar pattern to that seen in sporotrichosis
Nocardia brasiliensis causing lymphocutaneous skin infections in a solid organ transplant (SOT) recipient is relatively rare with only two other cases reported to our knowledge
Summary
Sporotrichoid nocardiosis, which is known as the lymphocutaneous form of nocardiosis, is a distinct type of cutaneous Nocardia infection. It is not unusual to misdiagnose this form of nocardiosis as sporotrichosis and inappropriately treat with antifungal agents [1]. In immunocompromised patients, this may have serious consequences, including causing a delay in making the correct diagnosis and dissemination of infection to other organs. Nocardia brasiliensis causing lymphocutaneous skin infections in a solid organ transplant (SOT) recipient is relatively rare with only two other cases reported to our knowledge. This case illustrates one such presentation and includes a review of the relevant literature
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