basic as can be
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Seborrheic Keratosis | Benign: papillomatous or plaque like proliferation of ordrly mature epidermal cells with both basaloid and squamous feartures
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| Skin Tag | Core of reticular dermal collagen covered by normal or papillomatous seborrheic keratosis like epidermis
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| Epidermal cysts (wen or sebaceous) | Cystic dilation of the follicular infundibulum lined with epidermis adn filled with keratin
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| Keratoacanthoma | florid downgrowth of well differentiated squamous epithelium to form symmetric cup shaped tumor
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| Adnexal Tumor | Tumor of sweat, sebaceous and follicular origin
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| syringoma | adnexal tumor of the eccrine sweat gland under the eye
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| trichoepithelioma | Adnexal tumor with follicular differentiation
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| Actinic Keratosis | epidermal proliferation with some cytologic atypia of keratinocytes (near basilar layer) may have cutaneous horns and solar elastosis fibers from sun damage
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| Bowen's disease | full thickness epidermal atypia with marked dypslasia of epidermal cells
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| SCC | proliferation of atypical eosinophilic sqamoid epithelium wiht varying degrees of keatin production and derma INVASION
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| Basal cell carcinoma | nodular prolifeation of atypical basal cells with peripheral palisading and retraction from adjacent epidermis
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| Sclerosing BCC | small tumor islands embedded in fibrotic stroma
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| Superficial BCC | nests of basal cells attached to the epidermis
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| Dermatofibroma | localized intradermal prolifeationa of fibroblasts and histiocytes
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| Infantile cap. hemangioma | sheets of closely packed capillaries that form large nodules with pushing margins
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| Lobular capillary hemangioma | pyogenic hemangioma lobular arrangement of capillaries that can be obscured by surface ulceration, edema, and inflammation
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| Kaposi's Sarcoma | Proliferation of uniform spindle cells that form patches or nodules in superficial dermis with erythrocytes in narrow slits between spindle cells
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| Lymphoid Infiltate | mixed cell population of small and large lymphocytes
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| when is lymphoid infiltrate benign | when there are germinal centers eosinophils and plasma/giant cells
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| what are leukemia lymphiod infiltrate findings | monomorphic cytologically atypical dermal and cutaneous infiltrates tiwht diffuse destructive patterns
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| Mycoiss fungoids | diagnostic band like infiltrates in the superficial dermis composed of atypical lymphid cells with hyperchromatic nuclei showing folded nuclear contours
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| Pautrier microabscess | cells expand (Mycosis fungoids) into the epidermis adn form intraepidermal abscesses
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| seborrheic keratoiss | tan brown stuck on
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| Skin tag | small flesh colored pailloma
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| Epidermal cysts (wen or sebaceous cysts | Cystic dilation of follicular infundibulum lined iwht epithelium filled with keratin
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| Keratoacanthoma | elevated dome like with keratin crater
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| Adnexal Tumor | tumor of the sweat sebacceous or follicular gland
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| syringoma | adnexal tumor of the sweat gland under the eye
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| Tricchoepithelioma | follicular differentiation
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| Actinic keratosis | premalignant papules on sunesposed areas with most SCC arising from them
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| Bowen's Disease | SCC in situ prestens as a plaque anywhere not just sun exposed full thickness epidermal atypia once invasive 40% mets
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| Bowens diseases is associated with | HPV and arsenic exposure
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| SCC | from actinic keratosis rarely mets can arise de novo from mucocutaneous jn, burns or radiation car, chronic usler or drainins sinus 10-40 percent mets
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| Basal Cell Carcinoma | most common malignant skin tumor in sunexposed pearly trnaslucent papule or nodule "rodent ulcer"
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| Sclerosing BCC | tumor island in fibrotic stroma
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| superficial BCC | scaly patch iwht a nest of basal cell attached to epidermis
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| Dermatofibroma | firm immobile intradermal nodule on extremities of young and middle ages with intradermal proliferation of fibroblasts and histiocytes
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| Capillary hemangioma | external nose and nasal vestibules
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| infantile hemangioma | strawberry hemangioma
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| Lobular capillary hemangioma | pyogenic granuloma
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| Kaposi's sarcoma | aids adn elderly in africa it affects younger with Herpes 8 but those with kaposi tend to have a better prognoiss
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| Lymphoid infiltrate | often benign from arthropod bites, infectious agents, foreign material, when the immune cells are normal it is benign when they are abnomal it is malignant
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| Mycosis fungoids | T cell lymphoma mostly primary cutaneous with lymphomas will disemminate
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| Pautrier microabscesses | when the cells extend into the epidermis to form absecss long term remission are hard to come by even in the first stage this is a mycosis fungoides
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