case_images: PMC2637255_01
case_images: Photographic image of the apocrine hidrocystoma inside the auricular canal with the use of a rigid 0  6-cm endoscope.
case_images: 1757-1626-2-79-1.jpg
case_images: PMC2637255_01_1757-1626-2-79-1.jpg
case_images: F1
case_images: Physical examination revealed a tender solitary, skin-colored, dome-shaped nodule arising from the inferior and posterior wall of the left external auditory canal that narrowed the external auditory meatus and canal (figure 1).
case_images: Axial, soft tissue window CT scan demonstrating a polypoid soft tissue mass located at the posterior canal wall extending from the entrance to the bone-cartilage limit of the auditory canal, 7.9 mm in diameter.
case_images: 1757-1626-2-79-2.jpg
case_images: PMC2637255_01_1757-1626-2-79-2.jpg
case_images: F2
case_images: Computerized tomography (CT) scan of the temporal bone (figure 2) demonstrated a well-circumscribed, soft tissue narrowing most of the external auditory canal.
case_images: Histopathologic section of the surgical specimen demonstrating a cyst in the dermis lined by a one-or two-layered cuboidal or flattened epithelium resting on a layer with spindle myoepithelial cells. In close vicinity to the cyst are groups of apocrine glands, partly dilated, showing the typical eosinophilic epithelium with evidence of decapitation secretion (H&E, original magnification 10x).
case_images: 1757-1626-2-79-3.jpg
case_images: PMC2637255_01_1757-1626-2-79-3.jpg
case_images: F3
case_images: Histopathologic examination of paraffin sections of the specimen, stained with haematoxylin-eosin (figure 3), revealed the presence of a cyst in the dermis lined by a one-or two-layered cuboidal or flattened epithelium resting on a layer with spindle myoepithelial cells.