Evaluation of early manifestations of spreading pattern Mycobacterium marinum infection by ultrasonography

Abstract

Mycobacterium marinum is a pathogenic mycobacterium found in skin and soft tissue infections and is associated with fish and bodies of water. 1 Mycobacterium marinum infections can be divided into four types: a solitary papulonodular lesion, sporotrichoid form, deep infection, and disseminated infection. In about 25% of patients, the infection manifests in the sporotrichoid form. This type of infection is characterized by the distribution of subcutaneous nodules of lymphatic ves-F I G U R E 1 (A) Case 1: Lesions of patients at the first visit. (B) (Right thumb) Hyperkeratosis of the epidermis, incomplete keratosis, thickening of the spinous layer, and neutrophil abscess can be seen. Infiltration of lymphocytes, histiocytes, and plasma cells in the superficial dermis. PSA staining: No fungal hyphae and spores were found; acid-fast staining: acid-fast bacteria (-) (hematoxylin-eosin staining, ×40). (C) Ultrasonic images at first visit. (D) Ultrasound images at the second visit This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.