Cutaneous nontuberculous mycobacteria infections: A retrospective case series of 78 patients from the Texas Gulf Coast region.

BACKGROUND: The incidence of cutaneous nontuberculous mycobacteria (NTM) infections is increasing. These infections are a diagnostic and therapeutic challenge. OBJECTIVE: We investigated the clinical features, diagnosis, and management of cutaneous NTM infections. METHODS: A retrospective case series studied 78 patients from a Gulf Coast tertiary referral center diagnosed with cutaneous NTM infection by culture or stain of a skin biopsy specimen. RESULTS: A history of trauma, procedure, or environmental exposure was common. The mean time between the initial evaluation and diagnosis was 12 weeks. Only 15% of acid-fast bacillus-positive cultures had a positive acid-fast bacillus smear, and only 43% of those accompanied by skin biopsy specimen had a positive Fite stain. Immunosuppressed patients were more likely to have a positive Fite stain. Treatment included surgery and multiple antibiotics. Immunosuppressed patients and Mycobacterium abscessus group infections were more likely to have persistent disease. LIMITATIONS: M chelonae and M abscessus isolates were indistinguishable and therefore were reported together. Five cases were not confirmed by culture. CONCLUSIONS: Even with clinical suspicion, the diagnosis of NTM infection can be difficult. Results of acid-fast bacillus smears and special stains are frequently negative. Antibiotic resistance is common. Multidrug treatment is often required, and surgical therapy may be needed.

Mycobacterium fortuitum infection arising in a new tattoo.

We report an uncommon case of a cutaneous infection with Mycobacterium fortuitum arising in a new tattoo. A 29-year-old man presented with a several month history of a non-pruritic papular eruption within a tattoo; the papules developed 1-to-2 weeks after the tattoo procedure. He denied similar symptoms with previous tattoos. He had been treated unsuccessfully with cephalexin. Histopathologic examination revealed perifollicular chronic and granulomatous inflammation, consistent with chronic folliculitis. Acid-fast bacilli culture identified Mycobacterium fortuitum complex. The patient was treated with a 2-month course of oral trimethoprim-sulfamethoxazole (160mg/800mg twice daily) and ciprofloxacin (250 mg twice daily), with clinical improvement at follow up after three weeks of the antibiotic regimen. Rapidly growing mycobacteria have emerged as a cause of tattoo-associated cutaneous infection in recent years. Diagnosis and treatment can be difficult without clinical suspicion. M. fortuitum and other rapidly growing mycobacteria should be considered in the differential diagnosis of tattoo-associated dermatologic complications.

HIV photodermatitis presenting with widespread vitiligo-like depigmentation.

HIV photodermatitis encompasses a variety of clinical manifestations. We report a rare clinical presentation of HIV photodermatitis with widespread vitiligo-like depigmentation.

The "away" dermatology elective for visiting medical students: Educational opportunities and barriers.

Dermatology electives allow medical students an opportunity to explore the field of dermatology. In order to gain greater exposure to the specialty of dermatology, some medical students have an interest in taking "away" dermatology electives at other U.S. medical schools. A telephone survey was conducted to better understand the opportunities and barriers that exist for visiting medical students to take an elective in dermatology. Areas of focus in the survey included dermatology elective offerings, institutional policies toward visiting students, academic requirements for visiting students, timing of electives, financial costs of electives incurred by the student and institutional and regional preferences of the host medical school. Survey results indicated considerable opportunities for medical students to explore the field of dermatology among U.S. medical schools, but variance among schools regarding the number and types of dermatology electives offered. Medical schools with dermatology residencies were statistically more likely to offer dermatology electives to visiting medical students than those that did not (p<0.0001). Students from schools that do not provide more advanced electives may find it difficult to explore the field beyond a general dermatology elective because of the limited availability of subspecialty elective rotations for visiting students. Other barriers for "away" electives include academic requirements, priority in course registration for a school's own students, differing rotation schedules, and additional financial costs.