Search Results for: dermatofibroma

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

Differential Diagnosis in Dermatopathology

Differential Diagnosis

Dermatofibroma, hemorrhagic papulo-nodule Kaposi’s sarcoma, hemorrhagic papulo-nodule 1. Poorly circumscribed; border sometimes jagged 1. Well-circumscribed; border smooth 2. Epidermis acanthotic and hyperpigmented 2. Epidermis thinned and…

Differential Diagnosis in Dermatopathology

Images

Dermatofibroma, hemorrhagic papulo-nodule Kaposi’s sarcoma, hemorrhagic papulo-nodule

Differential Diagnosis in Dermatopathology

Differential Diagnosis

Dermatofibroma Desmoplastic Spitz’s nevus 1. Acanthotic epidermis often associated with induction of folliculo-sebaceous units 1. Little or no acanthosis; no induction of folliculo-sebaceous units 2. Epidermis often thinned above the center…

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

Nodular fasciitis vs. Malignant fibrous histiocytoma

A malignant nonepithelial neoplasm (a sarcoma) presumably of perineural fibrocytes that presents itself usually on the trunk, but sometimes elsewhere, such as the extremities, face, and scalp. A papule of it tends to become a plaque, a nodule, a…