Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Origin of Adnexal Neoplasms?

…ma, sebaceoma, hidradenoma clear-cell, leiomyoma, neuroma, or hemangioma, remains recondite. In most instances, those proliferations are not continuous with epidermis (surface or infundibular) or with preexisting epithelial or nonepithelial adnexal s…

Differential Diagnosis in Dermatopathology

Dermatofibroma vs. Desmoplastic Spitz’s nevus

…breadth of sweep. Last, wherever a skin lesion—be it a cherry hemangioma, a Miescher’s nevus, or a seborrheic keratosis—is encountered as an incidental finding in a photograph, we call it to the reader’s attention in the photograph’s legend. Some dec…

Differential Diagnosis in Dermatopathology

Discussions

…se changes having been designated, badly, “histiocytoid hemangioma”) and the presence of lymphoid follicles is not unique to Kimura’s disease; they may be met with in such disparate circumstances as a response to the “bite&#82…

Differential Diagnosis in Dermatopathology

Pyogenic granuloma, fully developed vs. Kaposi’s sarcoma, nodular

…breadth of sweep. Last, wherever a skin lesion—be it a cherry hemangioma, a Miescher’s nevus, or a seborrheic keratosis—is encountered as an incidental finding in a photograph, we call it to the reader’s attention in the photograph’s legend. Some dec…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…of pyogenic granuloma seems to be a “lobular capillary hemangioma.” In actuality, it is not a neoplasm (angioma), but a true hyperplasia of vessels consequent to trauma external. In time, such a lesion involutes more or less completely….

Differential Diagnosis in Dermatopathology

Discussions

…ly. Pyogenic granuloma may be misinterpreted clinically as an hemangioma, a lesion of Kaposi’s sarcoma, or a melanoma. Bacillary angiomatosis does not really resemble any other angiomatosis, save for bartonellosis. Unlike pyogenic granuloma, ba…

Differential Diagnosis in Dermatopathology

Dermatofibroma with "monster" cells vs. Malignant fibrous histiocytoma

…breadth of sweep. Last, wherever a skin lesion—be it a cherry hemangioma, a Miescher’s nevus, or a seborrheic keratosis—is encountered as an incidental finding in a photograph, we call it to the reader’s attention in the photograph’s legend. Some dec…

Histologic Diagnosis of Inflammatory Skin Diseases

…breadth of sweep. Last, wherever a skin lesion—be it a cherry hemangioma, a Miescher’s nevus, or a seborrheic keratosis—is encountered as an incidental finding in a photograph, we call it to the reader’s attention in the photograph’s legend. Some dec…

Differential Diagnosis in Dermatopathology

Dermatofibroma vs. Dermatofibrosarcoma protuberans

…breadth of sweep. Last, wherever a skin lesion—be it a cherry hemangioma, a Miescher’s nevus, or a seborrheic keratosis—is encountered as an incidental finding in a photograph, we call it to the reader’s attention in the photograph’s legend. Some dec…

Differential Diagnosis in Dermatopathology

Discussions

…granulation tissue beneath an ulcer and, in time, resembles a hemangioma, clinically and histopathologically. As it resolves, an ulcerated pyogenic granuloma re-epithelializes, develops thick, fibrous septa that intersect the angiomatous elements and…