Search Results for: dermatofibroma

Prediction without Pigment: a decision algorithm for non-pigmented skin malignancy

Prediction without Pigment: a decision algorithm for non-pigmented skin malignancy

…dahl et al.] Abbreviations used: BCC – basal cell carcinoma; SCC – squamous cell carcinoma; KA – keratoacanthoma; DF – dermatofibroma; LPLK – lichen-planus-like-keratosis (benign lichenoid keratosis); PG – pyogenic granuloma; IEC –…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Pseudomalignancies?

…-cell carcinoma. A simulator of superficial basal-cell carcinoma is follicular germs induced by fibrohistiocytic elements of dermatofibroma, and a mimic of squamous-cell carcinoma is the hyperplasia of adnexal epithelium associated often with…

Differential Diagnosis in Dermatopathology

Images

Dermatofibroma with “monster” cells Malignant fibrous histiocytoma…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

Dermatofibroma with “monster” cells Malignant fibrous histiocytoma 1. Symmetric 1. Asymmetric 2. Vertical orientation sometimes 2. No vertical orientation 3. Vasculature prominent 3. Vasculature not prominent 4. Few, if any, mitotic…

Melanoma and satellite blue papule

Melanoma and satellite blue papule

…like seborrheic keratosis, including lichen planus-like keratosis, hemangioma, pigmented basal cell carcinoma, hemosiderotic dermatofibroma, Kaposi sarcoma and angiosarcoma. Finally, exogenous dermal blue pigmentation, such as ink tattoo, radiation…

Histologic Diagnosis of Inflammatory Skin Diseases

Necrobiotic xanthogranuloma

…necrobiotic xanthogranuloma is not related to necrobiosis lipoidica, despite the similarities in nomenclature (any more than dermatofibroma is connected in any way to dermatofibrosarcoma protuberans or sclerema neonatorum to scleredema adultorum),…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

Dermatofibroma Dermatofibrosarcoma protuberans 1. Rather well-circumscribed, small lesion, often contained wholly in a 4.0 mm biopsy specimen 1. Poorly circumscribed broad lesion, practically never contained wholly in a 4.0 mm biopsy specimen 2….