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Path 17
Common Tumors of the Skin
Question | Answer |
---|---|
What is a common, sharply demarcated, light tan to deep brown tumor elevated (stuck on) above the adjacent normal epidermis | Seborrhic keratoses |
When do you remove Seborrhic keratoses | for cosmetic purposes |
What is a small, soft, flesh colored papillary or polypoid lesion often multiple | skin tag |
what does a skin tag look like microscopically | core of reticular dermal collagen covered by normal or sometimes paillomatous, seborrheic keratosis like epidermis |
what are some other names for skin tags | fibroepithelial polyps or acrochordons |
What is the name for a cystic dilation of follicular infundibulum, lined by epidermis and filled with keratin | epidermal cysts |
What are some other terms for epidermal cysts | wen and sebaceous cysts |
What is a relatively common, distinctive benign epidermal turmor that grows rapidly to produce a dome shaped nodule with a central keratin crater | Keratoacanthoma |
How do you treat a keratoacanthoma | the growth usually stops after a few weeks adn the lesion then slowly involutes leaving a scar |
A keratoacanthoma may be difficult to distinguish from what carcinoma? | squamous cell |
Adnexal Tumors refer to a wide variety of tumors of ? origin | sweat glands, sebaceous, and follicular origin |
What is the name of small, variably colored scaly papules or patches, often multiple, that develop on sun-exposed surfaces of middle aged or elderly, fair skinned individuals who have chronic sun exposure | Actinic keratosis |
What carcinoma commonly arises from areas of actinic keratosis | squamous cell carcinomas |
What are the histological features of actinic keratosis | epidermal proliferatio and mild to marked cytologic atypicality of keratinocytes, especially those near the basilar layer |
What is Bowen's disease | it is a term applied to squamous cell carcinoma in situ of the skin |
Where does Bowen's disease show up? | anywhere on the cutaneous surface including sun protected and exposed sites |
What is the histological picture of Bowen's disease | full thickness epidermal atypia |
Once Bowen's lesions are invasive the metastatic rate may be as high as? | 40% |
When Squamous cell carcinomas develop in certain locations they have a higher liklihood of metastasis compared to those that arise in actinic keratoses. What are some examples of these increased risk areas | lesions that develop do novo on sun protected skin, at mucocutaneous junctions, in burns or radiation scars, or in chronic ulcers or draining sinuses |
What is the name of a lesion that is a pearly translucent papule or nodule with surface telangiectasia and often a central ulceration (rodent ulcer) | Basal Cell Carcinoma |
Is the main cause of death from basal cell carcinoma local tissue invasion or metastasis | Local tissue invasion |
What is the name of a common firm relatively immobile intradermal nodule, usually found on the extremities of young or middle aged adults | dermatofibroma |
What are the two common distinctive forms of hemangiomas | infantile capillary hemangiomas (strawberry hemangiomas) and lobular capillary hemangiomas (pyogenic granuloma) |
What is the treatment for infantile capillary hemangiomas | Wait until mid childhood when they should disappear unless they compromise important functions such as breathing |
Kaposi's sarcoma has been associated with what virus | HHV8 |
What is the most common Primary cutaneous lymphoma | The T cell lymphoma with the misleading name - mycosis fungoides |