Differential Diagnosis in Dermatopathology

Pyogenic granuloma vs. Bacillary angiomatosis

What prompted the undertaking of this pocket atlas of dermatology? The reasons were several and varied, among them the following: 1.  Pictures are and always have been an extraordinarily valuable vehicle in the study of clinical dermatology. The fir…

Differential Diagnosis in Dermatopathology

Discussions

Dermatofibroma and dermatofibrosarcoma protuberans are lesions made up of dense diffuse infiltrates of mesenchymal cells in company with bundles of collagen, the two together occupying at least much of the thickness of the dermis and sometimes part…

Dermatology Practical & Conceptual

Melanoma and satellite blue papule

Abstract The colors that are seen in dermoscopy depend on the anatomic level of the skin at which the chromophores are seen. Blue color can be found in a variety of melanocytic and nonmelanocytic lesions. An 89-year-old man presented with a 3-year h…

Differential Diagnosis in Dermatopathology

Discussions

In addition to possessing some cells with extraordinarily atypical nuclei, those referred to colloquially as “monster” cells, the two pathologic processes of very different nature that are the basis for this particular exercise in differ…