Differential Diagnosis in Dermatopathology

Discussions

Trichoepithelioma and infundibulocystic basal-cell carcinoma have many features in common, including relative symmetry, follicular differentiation, elements of both basaloid (trichoblastic) and squamoid (spinous) cells, necrotic neoplastic cells, mi…

Differential Diagnosis in Dermatopathology

Discussions

…exceedingly. In still others, findings histopathologic of both trichoepithelioma and of basal-cell carcinoma may be present together in the very same section of tissue. Clinically, trichoepitheliomas may occur as numerous lesions on a face, but more…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Tricho-, pilo-, folliculo- ?

“pilo- [L. pilus]. Combining form indicating hair. . . . tricho- [Gr. thrix, trichas, hair]. A prefix denoting a relationship to hair. . . . follicle- [L. folliculus, little bag]. A small secretory sac or cavity.” Tabers Cyclopedic Me…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Sebaceous Epithelioma?

“Sebaceous epithelioma or sebaceoma. . . Sebaceous epithelioma, in contrast to sebaceous adenoma, grows in irregular masses and does not contain as many mature sebaceous cells.” Hashimoto K, Lever WF. Tumors of skin. In: Fitzpatrick TB…

Dermatology Practical & Conceptual

The dermatoscopic universe of basal cell carcinoma

Abstract Following the first descriptions of the dermatoscopic pattern of basal cell carcinoma (BCC) that go back to the very early years of dermatoscopy, the list of dermatoscopic criteria associated with BCC has been several times updated and rene…

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…