Eustachian tube teratoma: A case report

Figure 4 Histopathological appearance of the patient’s resected tumor mass. A: Photomicrograph of the eustachian tube teratoma shows a mass with keratinized squamous epithelium (arrowheads) and chronic inflammatory cells (white arrows); B: Squamous epithelium (black arrows), adipose tissue (*) and sebaceous glands (arrowheads); C and D: Adipose tissue (*) and mature skeletal muscle tissue (arrowheads). All images are original magnification of × 100.