General: books staging-Merkel cell carcinoma staging-nonadnexal carcinoma

Benign (nonmelanotic) epidermal tumors or tumor-like lesions: Becker's nevus clear cell acanthoma clear cell papulosis cutaneous horn epidermal nevus inverted follicular keratosis large cell acanthoma melanoacanthoma porokeratosis pseudoepitheliomatous hyperplasia seborrheic keratosis verruca vulgaris warty dyskeratoma

Fibrous, fibrohistiocytic and myofibroblastic neoplasms: acquired digital fibrokeratoma angiofibroma / fibrous papule atypical fibroxanthoma collagenous fibroma deep benign fibrous histiocytoma dermatofibroma / benign fibrous histiocytoma dermatofibrosarcoma protuberans (DFSP) (variants: myxoid myoid (pending) pigmented (pending) pleomorphic (pending))  dermatomyofibroma elastofibroma fibroepithelial polyp fibroma of tendon sheath fibrous hamartoma of infancy inclusion body fibromatosis inflammatory pseudotumor keloid myoepithelioma myofibroma nodular fasciitis pleomorphic dermal sarcoma pleomorphic fibroma sclerotic fibroma superficial angiomyxoma

Cysts: bronchogenic cyst cutaneous ciliated cyst dermoid cyst digital myxoid cyst (pending) dilated pore of Winer (pending) epidermal (epidermoid) cyst hidrocystoma steatocystoma trichilemmal (pilar) cyst vellus hair cyst

Adnexal tumors: general
• Sweat gland derived (apocrine & eccrine glands): adenoid cystic carcinoma (primary cutaneous) apocrine tubular adenoma chondroid syringoma cylindroma digital papillary adenocarcinoma eccrine spiradenoma eccrine syringofibroadenoma endocrine mucin producing sweat gland carcinoma extramammary Paget disease hidradenoma hidradenoma papilliferum microcystic adnexal carcinoma papillary eccrine adenoma poroma primary cutaneous mucinous carcinoma sweat gland carcinoma syringocystadenoma papilliferum syringoma
• hair follicles: basaloid follicular hamartoma cutaneous lymphadenoma fibrofolliculoma / trichodiscoma hair follicle nevus pilomatrixoma proliferating pilar tumor trichilemmoma trichoepithelioma / trichoblastoma trichofolliculoma tumor of the follicular infundibulum (pending)
• sebaceous glands: sebaceous hyperplasia nevus sebaceus of Jadassohn sebaceoma sebaceous adenoma sebaceous carcinoma

Premalignant / in situ: actinic keratosis bowenoid papulosis squamous cell carcinoma in situ / Bowen disease

Carcinoma (nonadnexal): adenosquamous basal cell carcinoma keratoacanthoma lymphoepithelioma-like mucoepidermoid squamous cell carcinoma (variants: acantholytic spindle cell) verrucous carcinoma

Lymphoma and related disorders (see also Lymphoma chapter): general lymphoid hyperplasia primary cutaneous (general)
• B cell neoplasms: cutaneous marginal zone lymphoma / MALT primary cutaneous diffuse large B cell lymphoma (variant: leg type)
• T cell / NK cell neoplasms: anaplastic large cell blastic plasmacytoid dendritic cell neoplasm (BPDCN) lymphomatoid papulosis mycosis fungoides (stages: premycotic (patch)) Woringer-Kolopp disease
• Other: cutaneous mastocytosis indeterminate cell histiocytosis / indeterminate dendritic cell tumor Jessner lymphocytic infiltration of skin Langerhans cell histiocytosis leukemia cutis multicentric reticulohistiocytosis Rosai-Dorfman disease

Vascular tumors: acquired tufted angioma angiokeratoma angiosarcoma bacillary angiomatosis benign lymphangioendothelioma / acquired progressive lymphangioma eccrine angiomatous hamartoma glomus hemangioendothelioma: epithelioid kaposiform retiform angioleiomyoma intravascular papillary endothelial hyperplasia Kaposi sarcoma Kimura disease lymphangioma / lymphatic malformation pyogenic granuloma / lobular capillary hemangioma verruga peruana
Hemangioma variants: arteriovenous malformation (pending) capillary cavernous epithelioid hemangioma / angiolymphoid hyperplasia with eosinophils glomeruloid hobnail hemangioma / targetoid hemosiderotic hemangioma infantile hemangioma microvenular spindle cell verrucous

Neural tumors: granular cell tumor malignant peripheral nerve sheath tumor (MPNST) Merkel cell neurofibroma neurothekeoma palisaded encapsulated neuroma perineurioma schwannoma

Other tumors of skin: patterns atypical fibrous histiocytoma benign cystic teratoma Borst-Jadassohn phenomenon connective tissue nevus endometriosis leiomyoma leiomyosarcoma meningothelial hamartoma of scalp metastatic nevus lipomatosus superficialis striated muscle hamartoma supernumerary digit white sponge nevus xanthoma xanthogranuloma-juvenile

Stains-Keratinocytic and adnexal neoplasms: CEA CK5/6 CK7 EMA p40 p63 pancytokeratin
Stains-Spindle cell neoplasms: CD31 CD34 desmin ERG Factor XIIIa p63 S100
Stains-Specialized markers: BAP1 BRAF MLH1 MSH2 MSH6 PMS2

Superpages: entire chapter images virtual slides


Index (table of contents in alphabetical order)
A-E: acantholytic squamous cell carcinoma acquired digital fibrokeratoma acquired tufted angioma actinic keratosis adenoid cystic carcinoma (primary cutaneous) adenosquamous carcinoma adnexal tumors-general anaplastic large cell lymphoma angiofibroma / fibrous papule angiokeratoma angioleiomyoma angiosarcoma apocrine tubular adenoma atypical fibrous histiocytoma atypical fibroxanthoma bacillary angiomatosis basal cell carcinoma basaloid follicular hamartoma Becker's nevus benign cystic teratoma benign lymphangioendothelioma / acquired progressive lymphangioma blastic plasmacytoid dendritic cell neoplasm (BPDCN) Borst-Jadassohn phenomenon bowenoid papulosis bronchogenic cyst capillary hemangioma carcinoma-staging cavernous hemangioma chondroid syringoma clear cell acanthoma clear cell papulosis collagenous fibroma connective tissue nevus cutaneous ciliated cyst cutaneous horn cutaneous lymphadenoma cutaneous marginal zone lymphoma / MALT cutaneous mastocytosis cylindroma deep benign fibrous histiocytoma dermatofibroma / benign fibrous histiocytoma dermatofibrosarcoma protuberans dermatofibrosarcoma protuberans - myxoid variant dermatomyofibroma dermoid cyst digital papillary adenocarcinoma eccrine angiomatous hamartoma eccrine spiradenoma eccrine syringofibroadenoma elastofibroma endocrine mucin producing sweat gland carcinoma endometriosis epidermal (epidermoid) cyst epidermal nevus epithelioid hemangioma / angiolymphoid hyperplasia with eosinophils extramammary Paget disease

F-M: fibroepithelial polyp fibrofolliculoma / trichodiscoma fibroma of tendon sheath fibrous hamartoma of infancy glomeruloid hemangioma glomus granular cell tumor hair follicle nevus hemangioendothelioma: epithelioid hemangioendothelioma: kaposiform hemangioendothelioma: retiform hidradenoma hidradenoma papilliferum hidrocystoma hobnail hemangioma / targetoid hemosiderotic hemangioma inclusion body fibromatosis indeterminate cell histiocytosis / indeterminate dendritic cell tumor infantile (benign) hemangioendothelioma infantile hemangioma inflammatory pseudotumor intravascular papillary endothelial hyperplasia inverted follicular keratosis Jessner lymphocytic infiltration of skin Kaposi sarcoma keloid keratoacanthoma Kimura disease Langerhans cell histiocytosis large cell acanthoma leiomyoma leiomyosarcoma leukemia cutis lymphangioma / lymphatic malformation lymphoepithelioma-like carcinoma lymphoid hyperplasia lymphoma-general lymphomatoid papulosis malignant peripheral nerve sheath tumor (MPNST) melanoacanthoma meningothelial hamartoma of scalp Merkel cell carcinoma Merkel cell carcinoma-staging metastatic carcinoma microcystic adnexal carcinoma microvenular hemangioma mucoepidermoid carcinoma multicentric reticulohistiocytosis mycosis fungoides mycosis fungoides-premycotic (patch) stage myoepithelioma myofibroma

N-Z: neurofibroma neurothekeoma nevus lipomatosus superficialis nevus sebaceus of Jadassohn NK/T cell lymphoma nodular fasciitis palisaded encapsulated neuroma papillary eccrine adenoma patterns perineurioma pilomatrixoma pleomorphic dermal sarcoma pleomorphic fibroma porokeratosis poroma primary cutaneous diffuse large B cell lymphoma primary cutaneous diffuse large B cell lymphoma-leg type primary cutaneous lymphoma (general) primary cutaneous mucinous carcinoma proliferating pilar tumor pseudoepitheliomatous hyperplasiapyogenic granuloma / lobular capillary hemangioma Rosai-Dorfman disease schwannoma sclerotic fibroma sebaceoma sebaceous adenoma sebaceous carcinoma sebaceous hyperplasia seborrheic keratosis spindle cell hemangioma spindle cell squamous cell carcinoma squamous cell carcinoma squamous cell carcinoma in situ / Bowen disease steatocystoma striated muscle hamartoma superficial angiomyxoma supernumerary digit sweat gland carcinoma syringocystadenoma papilliferum syringoma trichilemmal (pilar) cyst trichilemmoma trichoepithelioma / trichoblastoma trichofolliculoma vellus hair cyst verruca vulgaris verrucous carcinoma verrucous hemangioma verruga peruana warty dyskeratoma white sponge nevus Woringer-Kolopp disease xanthogranuloma-juvenile xanthoma