Heterotopic Ectodermal and Mesodermal Structures Figs 4347

Rarely, heterotopic "neometaplasia" (Young et al. 1981) may result in the formation of epidermoid or dermoid cysts [9084/0] (Figs. 43-45) or give rise to sebaceous or sweat gland formations beneath the ectocervical epithelium (Figs. 46, 47; Dougherty et al. 1962). These structures have no clinical significance.

Sebaceous Gland Cyst Veterinary
Fig. 43. Epidermoid cyst of ectocervix. H&E

Fig. 42. Ciliated cell (tubal) metaplasia of endocervical glands. Same case as in Fig. 41. Focal, noncon-tinuous positivity for pi6INK4a. pi6INK4a immunostain

Heterotopic Sebaceous Glands
Fig. 45. Epidermoid cyst of ectocervix. Foreign body reaction around squamous cells. H&E
Heterotopic Sebaceous Glands
Fig. 46. Formation of sebaceous glands beneath ectocervical epithelium. H&E
Ectoderm Differentiation
Fig. 47. Formation of sebaceous glands beneath ectocervical epithelium. H&E, higher magnification

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  • molly morrison
    What Is A Sebaceous Cysts?
    7 years ago

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