Rare diagnosis of nodular lymphangitis caused by Mycobacterium marinum: MDCT imaging findings

Abstract

Mycobacterium marinum is an atypical mycobacterium that usually causes a solitary nodule on the hand (“fish tank granuloma”) or less commonly, secondary erythematous channels and nodules spread along lymphatic drainage of the extremity, mimicking sporothricoid skin lesions of nodular lymphangitis. This report presents a case of this rare entity, a nodular lymphangitis caused by Mycobacterium marinum. Multidetector computed tomography (MDCT) imaging was very useful in determining the morphology (cellulitis with a few small subcutaneous nodules and channels) and the extension of the lesion.

Genital mycobacteriosis caused by Mycobacterium marinum detected in two captive sharks by peptide nucleic acid–fluorescence in situ hybridization

“…This study is the first to describe cases of M. marinum infection in an elasmobranch. Mycobacterium marinum is a representative NTM agent in aquatic animals; it is considered an important candidate infectious agent of aquatic zoonosis because M. marinum has been isolated from human lesions, including dermatitis (Tomas et al, 2014), following exposure to contaminated aquatic materials (Jernigan & Farr, 2000), and is implicated in pneumonia as well (Oh et al, 2018). Based on these features it is vital to know the prevalence and distribution of NTM in aquatic environments and organisms, in accordance with the 'One Health' approach to control NTM infections in humans (Thirunavukkarasu et al, 2017).…”

“…Both freshwater and marine fishes are considered susceptible to NTM, most commonly M. marinum , M. fortuitum and M. chelonae (Gauthier & Rhodes, 2009 ). In addition to its impact on fish health, M. marinum is a potential zoonotic since it produces granulomatous lesions in human skin (Tomas et al, 2014 ), usually following exposure to infected fish surfaces (Jernigan & Farr, 2000 ) and is also a risk factor for pneumonia (Oh et al, 2018 ). In comparison with the wealth of information on piscine mycobacteriosis in teleosts, there is a remarkable paucity of reports about this disease in elasmobranchs.…”

Mycobacterium marinum infection contracted from seaweed wrap in a psoriasis patient undergoing treatment with adalimumab

“…Tomas et al reported a case of a 49-year-old who owned a fish tank and was on adalimumab for the treatment of ankylosing spondylitis. He developed M. marinum infection of his right hand [8].…”