A malignant granular cell tumor in the distal reproductive tract of a control Wistar Han rat

STP 2025 -- Granular cell tumors in rodents have been described in various tissues and are considered to be mostly benign, including in the distal reproductive tract. Occasional reports of malignant granular cell tumors in the literature were classified based on the morphologic features. For the first time, we describe a case of malignant granular cell tumor with potential mesenchymal cell origin in a control Wistar Han rat’s uterine cervix with extensive regional metastasis.