Differential Diagnosis in Dermatopathology

Differential Diagnosis

Trichoblastoma, trichoepitheliomatous type Trichoblastic (basal-cell) carcinoma, nodular type 1. Ulceration uncommon and always secondary to trauma 1. Ulceration common 2. Neoplasm symmetrical 2. Neoplasm asymmetrical 3. Neoplasm well-circum…

Histologic Diagnosis of Inflammatory Skin Diseases

Pheohyphomycosis

Pheohyphomycosis Synonyms Phaeomycotic cyst Subcutaneous pheaohyphomycosis Presentation stereotypical Age and sex No predilection for age or sex, but more common in individuals who reside in the tropics; most of those persons not immunocompromised…

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…

Histologic Diagnosis of Inflammatory Skin Diseases

Parasitic infestations

Parasitic infestations Presentation stereotypical Age and sex No predilection for age or sex; occurring chiefly in the tropics Distribution of lesions Localized usually to one site anatomic; some infestations parasitic are associated with lesions wi…