PMC10276565_01
Skin manifestations of Mycobacterium marinum infection. Multiple red nodules and plaques on the left thumb and forearm.
CCID-16-1499-g0001.jpg
PMC10276565_01_CCID-16-1499-g0001.jpg
f0001
Two dark red infiltrative patches with clear boundaries and crusting and desquamation on the surface were seen on the left forearm (Figure 1).
Histopathological examination. (a) Under low-power microscopy, there is diffuse inflammatory cell infiltration throughout the entire dermis (HE, x40). (b) Under high-power microscopy, there is diffuse infiltration of inflammatory cells predominantly composed of lymphocytes, histiocytes, and neutrophils (HE, x200). (c) There are granulomatous inflammatory changes with the presence of multinucleated giant cells (HE, x200).
CCID-16-1499-g0002.jpg
PMC10276565_01_CCID-16-1499-g0002.jpg
f0002
Inflammatory cells such as lymphocytes, neutrophils, eosinophils, histiocytes, and multinucleated giant cells were diffusely infiltrated in the dermis (Figure 2).