ABSTRACT
We describe a cutaneous abscess caused by Nocardia abscessus in a previously healthy woman. A 74-year-old woman presented with recurrent bullae on her left forearm that developed 1 week prior and was initially suspected to be a cutaneous infection with Mycobacteria or Tinea corporis. Histopathologically, the skin lesion formed an abscess. A smear revealed a few branched Gram-positive filamentous microorganisms that formed a creamy white colony on a blood agar plate after incubation for 3 days. The colony tested negative on acid-fast bacilli (AFB) staining, but was positive on modified AFB staining. The isolate was confirmed to be N. abscessus by 16S rRNA sequencing analysis. The isolate was susceptible to trimethoprim-sulfamethoxazole, amikacin, cefotaxime and erythromycin but resistant to penicillin. The patient was treated with clarithromycin but subsequently lost to follow-up. To the best of our knowledge, this is the first report of a human cutaneous infection with N. abscessus in Korea.
Subject(s)
Aged , Female , Humans , Abscess , Agar , Amikacin , Cefotaxime , Clarithromycin , Erythromycin , Forearm , Korea , Lost to Follow-Up , Nocardia , Penicillins , Skin , Tinea , Trimethoprim, Sulfamethoxazole Drug CombinationABSTRACT
Paecilomyces lilacinus is an ubiquitous saprophytic fungus and very rarely pathogenic to the human. Although it has been reported to cause endophthalmitis, orbital cellulitis, prosthetic valve endocarditis, and pulmonary infection, cutaneous infection caused by Paecilomyces lilacinus has been rarely reported. A 46-year-old Korean man had asymptomatic slowly growing multiple cutaneous nodules on the left arm and wrist for 8 months. He received a renal transplantation in 1991 because of end-stage renal disease. Postoperatively, he has taken cyclosporin and deflazacort for immunosuppression. Physical examination revealed that the lesions were discrete or confluent, firm, elevated, well-defined fluctuating nodules. Histologic section showed multiple well-encapsulated intradermal abscesses with some foci of chronic granulomatous changes composed of lymphocytes, histiocytes and giant cells. PAS positive fungal hyphae and spores were also found. On the Sabouraud's dextrose agar media, the organism grew rapidly to form velvety lilac-colored colonies with shallow radiating furrows. Slide culture showed brush-like conidiophores ending in flask-shaped phialides carrying chain of conidia. Because of the poor response to the oral antifungal drug for 2 months, all the lesions were completely excised.