Search Results for: dermatofibroma

Differential Diagnosis in Dermatopathology

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…Xanthomatous dermatofibroma Xanthomatous malignant fibrous histiocytoma…

Differential Diagnosis in Dermatopathology

Nodular fasciitis vs. Malignant fibrous histiocytoma

…ons except when memorable, vital to clinical practice, or a tool to learning. A few entities, such as pyogenic granuloma and dermatofibroma, were presented in the original Clinical Atlas as inflammatory, rather then neoplastic, skin diseases. For…

Time to reconsider Spitzoid neoplasms?

Time to reconsider Spitzoid neoplasms?

…nvincing, because it is very difficult to explain why it does not generally fail in the diagnosis of basal cell carcinoma or dermatofibroma, and so frequently fails in Spitzoid neoplasms. A second possibility may be that, despite the numerous…

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…

Differential Diagnosis in Dermatopathology

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Dermatofibroma with “monster” cells Malignant fibrous histiocytoma…

Differential Diagnosis in Dermatopathology

Pigmented Lesions

…in the papillary dermis, rarely in the upper part of the reticular dermis too. Melanin increased in amount in the epidermis. Dermatofibroma (183, 520) Proliferation of fibrocytes and histiocytes (lipophages and siderophages early in the course) in a…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

Surface of dermatofibroma affiliated with follicular germs Surface of superficial basal-cell carcinoma 1. Acanthotic hyperpigmented epidermis; not ulcerated 1. Thin epidermis; sometimes eroded and/or ulcerated 2. Proliferations of germinative…

Differential Diagnosis in Dermatopathology

Images

Dermatofibroma Desmoplastic Spitz’s nevus…

Differential Diagnosis in Dermatopathology

Images

…Surface of dermatofibroma affiliated with follicular germs Surface of superficial basal-cell carcinoma…