Differential Diagnosis in Dermatopathology

Discussions

Changes histopathologic that small nodular and large nodular types of trichoblastoma have in common include aggregations formed mostly of follicular germinative cells, i.e., trichoblasts, nuclei of trichoblasts at the periphery of nodules often are…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Basal-Cell Carcinoma Common in Nevus Sebaceus?

“Nevus sebaceus may be ‘programmed’ for or susceptible to the eventual development of a variety of neoplasms that generally occur in adulthood. The most common of these is basal cell carcinoma, which develops in 5% to 7% of the l…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Pseudomalignancies?

“The term pseudocancerosis covers a variety of diseases that can be difficult to distinguish from true carcinomas not only clinically but also histologically. However, pseudocanceroses may not only be similar to squamous cell carcinomas but a…

Clinical Case Studies

Multiple Trichoepitheliomas

…t on her nose and chin. (Figure 1A, B). Figure 1A. Multiple trichoepitheliomas predominantly on the midface. Figure 1B. Multiple trichoepitheliomas. The patient was treated with dermabrasion in the 1980s, which was relatively unsuccessful. She…

Differential Diagnosis in Dermatopathology

Discussions

In general, neoplasms metastatic to the skin present little difficulty in differential diagnosis from neoplasms primary in the skin. Carcinoma of the breast is an exception. If there are but a few neoplastic cells and numerous inflammatory cells sca…

Differential Diagnosis in Dermatopathology

Images

Trichoepithelioma Infundibulocystic basal-cell carcinoma…