Benign (nonmelanotic) epidermal tumors or tumor-like lesions: acquired digital fibrokeratoma chondrodermatitis nodularis clear cell papulosis cutaneous horn epidermal nevus fibroepithelial polyp hair follicle nevus large cell acanthoma melanoacanthoma porokeratosis pseudoepitheliomatous hyperplasia seborrheic keratosis verruca vulgaris

Cysts: apocrine cystadenoma / hidrocytoma bronchogenic cyst cystadenoma dermoid cyst keratinous cyst pigmented follicular cyst steatocystoma vellous hair cyst

Adnexal tumors: general
• Sweat gland derived (apocrine & eccrine glands): acrosyringeal adenomatosis adenoid cystic carcinoma (primary cutaneous) apocrine-general apocrine mixed tumor apocrine tubular adenoma chondroid syringoma clear cell acanthoma clear cell carcinoma with comedonecrosis congenital eccrine angiomatous hamartoma eccrine cylindroma eccrine poroma eccrine spiradenoma hidradenoma / eccrine acrospiroma hidradenoma papilliferum intraepidermal epithelioma microcystic adnexal carcinoma mucinous carcinoma myoepithelioma myoepithelial carcinoma papillary digital adenocarcinoma / aggressive papillary digital adenoma papillary eccrine adenoma sweat gland carcinoma syringocystadenoma papilliferum syringoma
• hair follicles: cutaneous lymphadenoma folliculofibroma inverted follicular keratosis keratinous cyst keratoacanthoma pilar tumor pilomatrixoma trichilemmoma trichoepithelioma trichofolliculoma warty dyskeratoma
• sebaceous glands: senile sebaceous hyperplasia nevus sebaceus of Jadassohn sebaceous adenoma sebaceous carcinoma

Premalignant / in situ: carcinoma in situ-general actinic keratosis bowenoid papulosis Bowen disease Paget disease

Carcinoma (non adnexal): adenoid (acantholytic) squamous cell adenosquamous basal cell lymphoepithelioma-like Merkel cell Merkel-staging metastatic mucoepidermoid small cell spindle squamous cell squamous cell verrucous carcinoma staging

Lymphoma and related disorders: general acute lymphoblastic anaplastic large cell angiocentric blastic plasmacytoid diffuse large B cell follicular Hodgkin HTLV-1 intravascular Jessner lymphocytic infiltration of skin leukemia lymphoid hyperplasia lymphomatoid papulosis MALT mantle cell mast cell disorders mycosis fungoides NK/T cell peripheral T cell plasmacytoma primary cutaneous (general) Woringer-Kolopp disease

Vascular tumors: acquired angioma angiokeratoma angiosarcoma bacillary angiomatosis benign lymphangioendothelioma glomus hemangioma hemangioendothelioma: epithelioid infantile (benign) kaposiform retiform spindle cell intravascular papillary endothelial hyperplasia Kaposi sarcoma Kimura disease lymphangioma pyogenic granuloma reactive angioendotheliomatosis vascular leiomyoma verruga peruana
Hemangioma variants: capillary cavernous epithelioid glomeruloid hobnail juvenile microvenular spindle cell verrucous

Other tumors of skin: patterns angiofibroma atypical fibrous histiocytoma atypical fibroxanthoma benign cystic teratoma benign fibrous histiocytoma (superficial) collagenous fibroma connective tissue nevus deep benign fibrous histiocytoma dermatofibrosarcoma protuberant (dfsp) (variants: myxoid variant of dfsp sarcomas arising in dfsp) dermatomyofibroma endometriosis epithelial sheath neuroma granular cell tumor hamartoma of scalp histiocytoma inclusion body fibromatosis inflammatory pseudotumor keloid Langerhans cell histiocytosis leiomyoma leiomyosarcoma malignant fibrous histiocytoma malignant peripheral nerve sheath tumor (MPNST) meningioma meningioma-like tumor of skin multicentric reticulohistiocytosis neurofibroma neurothekeoma palisaded encapsulated neuroma perineurioma pleomorphic fibroma Rosai-Dorfman disease schwannoma sclerosing fibroma striated muscle hamartoma superficial angiomyxoma supernumerary digit white sponge nevus xanthoma xanthogranuloma-juvenile xanthogranuloma-necrobiotic

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Index (table of contents in alphabetical order)
A-E: acquired angioma acquired digital fibrokeratoma acrosyringeal adenomatosis actinic keratosis acute lymphoblastic lymphoma adenoid cystic carcinoma (primary cutaneous) adenoid (acantholytic) squamous cell carcinoma adenosquamous carcinoma adnexal tumors-general anaplastic large cell lymphoma angiocentric lymphoma angiofibroma angiokeratoma angiosarcoma apocrine cystadenoma / hidrocytoma apocrine glands-general apocrine mixed tumor apocrine tubular adenoma atypical fibrous histiocytoma atypical fibroxanthoma bacillary angiomatosis basal cell carcinoma benign cystic teratoma benign fibrous histiocytoma (superficial) benign lymphangioendothelioma blastic plasmacytoid lymphoma Bowen disease bowenoid papulosis bronchogenic cyst capillary hemangioma carcinoma in situ-general carcinoma-staging cavernous hemangioma chondrodermatitis nodularis chondroid syringoma clear cell acanthoma clear cell carcinoma with comedonecrosis clear cell papulosis collagenous fibroma congenital eccrine angiomatous hamartoma connective tissue nevus cutaneous horn cutaneous lymphadenoma cystadenoma deep benign fibrous histiocytoma dermatofibrosarcoma protuberans dermatomyofibroma dermoid cyst diffuse large B cell lymphoma eccrine cylindroma eccrine poroma eccrine spiradenoma eccrine syringofibroadenoma endometriosis epidermal nevus epithelial sheath neuroma epithelioid hemangioma

F-M: fibroepithelial polyp follicular lymphoma folliculofibroma glomeruloid hemangioma glomus granular cell tumor hair follicle nevus hamartoma of scalp hemangioendothelioma: epithelioid hemangioendothelioma: infantile (benign) hemangioendothelioma: kaposiform hemangioendothelioma: retiform hemangioendothelioma: spindle cell hemangioma hidradenoma / eccrine acrospiroma hidradenoma papilliferum histiocytoma hobnail hemangioma Hodgkin lymphoma HTLV-1 lymphoma inclusion body fibromatosis infantile (benign) hemangioendothelioma inflammatory pseudotumor intraepidermal epithelioma intravascular lymphoma intravascular papillary endothelial hyperplasia inverted follicular keratosis Jessner lymphocytic infiltration of skin juvenile hemangioma Kaposi sarcoma keloid keratinous cyst keratoacanthoma Kimura disease Langerhans cell histiocytosis large cell acanthoma leiomyoma leiomyosarcoma leukemia lymphangioma lymphoepithelioma-like carcinoma lymphoid hyperplasia lymphoma-general lymphomatoid papulosis malignant fibrous histiocytoma malignant peripheral nerve sheath tumor (MPNST) MALT lymphoma mantle cell lymphoma mast cell disorders melanoacanthoma meningioma meningioma-like tumor of skin Merkel cell carcinoma Merkel cell carcinoma-staging metastatic carcinoma microcystic adnexal carcinoma microvenular hemangioma mucinous carcinoma mucoepidermoid carcinoma multicentric reticulohistiocytosis mycosis fungoides myoepithelioma myoepithelial carcinoma

N-Z: neurofibroma neurothekeoma nevus sebaceus of Jadassohn NK/T cell lymphoma Paget disease palisaded encapsulated neuroma papillary digital adenocarcinoma / aggressive papillary digital adenoma papillary eccrine adenoma patterns perineurioma peripheral T cell lymphoma pigmented follicular cyst pilar tumor pilomatrixoma pleomorphic fibroma plasmacytoma porokeratosis primary cutaneous lymphoma (general) pseudoepitheliomatous hyperplasiapyogenic granuloma reactive angioendotheliomatosis Rosai-Dorfman disease schwannoma sclerosing fibroma sebaceous adenoma sebaceous carcinoma seborrheic keratosis senile sebaceous hyperplasia small cell carcinoma spindle cell hemangioma spindle squamous cell carcinoma squamous cell carcinoma steatocystoma striated muscle hamartoma superficial angiomyxoma supernumerary digit sweat gland carcinoma syringocystadenoma papilliferum syringoma trichilemmoma trichoepithelioma trichofolliculoma vascular leiomyoma vellous hair cyst verruca vulgaris verrucous carcinoma verrucous hemangioma verruga peruana warty dyskeratoma white sponge nevus Woringer-Kolopp disease xanthogranuloma-juvenile xanthogranuloma-necrobiotic xanthoma