Skip to main content
Fig. 2 | Surgical and Experimental Pathology

Fig. 2

From: Neoplastic cells parasitized by Mycobacterium leprae: report of two cases of melanocytic nevus and one of basal cell carcinoma

Fig. 2

Parasitism of melanocytic nevus by M. leprae in case 2. a Histological sections showing intradermal melanocytic nevus (→) and leprosy lesion (*) (HE). b Melanocytic nevus cells characteristically have intracytoplasmic vacuoles that are filled by M. leprae (→) (HE). c Leprosy lesion adjacent to nevus cells with LL characteristics (*). d and e Immunohistochemistry (IHC) showing CD68-positive macrophages (*) and adjacent negative nevus cells (→). f and g IHC showing melanocyte-positive cells for Melan A (→) and negative macrophages in adjacent tissues (*). h Double staining (IHC-CD68 and FF) showing leprosy lesion macrophages immunostained (*) and non-immunostained nevus cells (→) containing bacilli in the cytoplasm. i Double staining (IHC-Melan A and FF) showing non-immunostained leprosy lesion (*) and immunostained nevus cells (→), both containing bacilli in the cytoplasm. j Double staining (IHC-Melan A and FF) showing immunostaining nevus cells (→) containing bacilli inside the intracytoplasmic vacuole

Back to article page