Mucoepidermoid Carcinoma
Fig. 5.1 Mucoepidermoid carcinoma. An ulcerated nodule on the forehead of an old patient Pathology MEC is usually a dermal-based nodular, nonencapsulated solid, and/or cystic neoplasm without continuity with the…
Fig. 5.1 Mucoepidermoid carcinoma. An ulcerated nodule on the forehead of an old patient Pathology MEC is usually a dermal-based nodular, nonencapsulated solid, and/or cystic neoplasm without continuity with the…
Fig. 15.1 This 63-year-old man presented with a slow-growing indurated nodule in association with a long-standing ill-defined erosive erythematous plaque in the perianal region Pathology Primary cutaneous apocrine adenocarcinoma is…
Fig. 8.1 The tumor presents as a slowly growing, fleshy, sessile, or pedunculated lesion Pathology The tumor is characterized by a fenestrated pattern formed by thin anastomosing strands of basaloid…
Fig. 31.1 Fibrosarcoma. The tumor is composed of monomorphic elongated, spindle cells that grow in interlacing fascicles, forming a so-called herringbone pattern Fig. 31.2 Fibrosarcoma. Herringbone pattern Fig. 31.3 Fibrosarcoma….
Fig. 24.1 (a) A nodular cyst-like proliferation with papillary projections infiltrating the dermis. (b) Papillary projections with tubular structures lined by cuboidal or columnar epithelium. (c) The glandular differentiation Fig….
Fig. 12.1 Trichilemmal carcinoma. Flesh-colored nodule on the upper lip Pathology This neoplasm has been shown to exhibit outer root sheath differentiation and is considered to be a malignant form…
Fig. 29.1 Low-grade fibromyxoid sarcoma. Histological appearance with spindle and stellate-shaped cells, in a whorled or linear arrangement, and with collagenized and myxoid areas Fig. 29.2 Low-grade fibromyxoid sarcoma. Collagenized…
Fig. 1.1 A keratotic nodule with erythematous halo on the scalp of an old patient Pathology Histologically, the tumor is composed of cords and nests of atypical keratinocytes with an…
Fig. 17.1 Primary cutaneous adenoid cystic carcinoma. There are nests and islands of cytologically monotonous cells with cribriform architecture Fig. 17.2 Primary cutaneous adenoid cystic carcinoma. In areas, the growth…
Fig. 11.1 Malignant proliferating trichilemmal tumor. A single hard, slow-growing nodular swelling 3 × 3 cm on the scalp. The lesion relapsed one year after excision Pathology The diagnosis of malignancy in…