Dermatology Practical & Conceptual

Dermatoscopy of folliculosebaceous cystic hamartoma

Abstract A 29-year-old Japanese man presented to our institution with a nodule on his nose that had increased in size since childhood. Physical examination indicated the presence of an elastic, firm, pedunculated red nodule measuring 15 mm in size….

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…

Differential Diagnosis in Dermatopathology


Infundibulo-folliculo-sebaceous cystic hamartoma and steatocystoma are both cystic hamartomas. Neither is simply a cyst because the structures that comprise each of them are not mere epithelium-lined sacs that house fluid or solid elements, but are…