Ear برای بزرگنمایی عکسها کلیک را روی ان نگه دارید Figure 7.1 Chondrodermatitis Nodularis Helicis. There is fibrosis and vascular proliferation in the dermis, accompanied by pseudoepitheliomatous hyperplasia of the overlying epithelium. The perichondrium demonstrates fibrinoid degeneration Figure 7.2 This squamous cell carcinoma of the auricular concha required the removal of the entire external ear Figure 7.3 Ceruminous Adenoma. A benign biphasic epithelial prolifera- tion is seen adjacent to normal ceruminous gland (top center) Figure 7.4 Adenoid cystic carcinoma growing beneath the epidermis of the external ear canal and infiltrating close to auricular cartilage (bottom left) Figure 7.5 Cholesterol granuloma composed of inflammation with hemorrhage and cholesterol crystals with foreign body giant cell reaction Figure 7.6 Meningioma of Ear. The appearance is identical to that of its counterpart in the central nervous system. Note the overlying cho- lesteatoma with middle ear epithelium replaced by keratinizing squamous mucosa Figure 7.7 So-Called Middle Ear Adenoma. This tumor is closely related and perhaps identical to carcinoid tumor of the ear Figure 7.8 Endolymphatic Sac Tumor. The tumor forms papillary and glandular structures lined by clear cells. The papillary structures have well-vascularized connective tissue cores Figure 7.9 Endolymphatic Sac Tumor. The gland and papillary structures are lined by a monolayer of cytologically bland cells with clear cytoplasm, resembling the normal endolymphatic sac organ Figure 7.10 Embryonal Rhabdomyosarcoma of the Middle Ear. Neoplastic tumor cells are seen growing beneath a flattened epithelium. Most of the cell population is small, but there are larger elements (rhabdomyoblasts) with more abundant fibrillary acidophilic cytoplasm
