Dermoid cyst of the floor of the mouth in an infant

Liesegang Rings in a Dermoid Cyst of the Floor of the Mouth

“…The age at presentation ranges from 15 to 35 years, 6 but cases have been described in infants and the elderly. [9][10][11] There is no sex predilection.…”

Dermoid Cyst of the Floor of the Mouth Diagnosed by Fine Needle Aspiration Cytology

“…10 Most patients range in age from 15 to 35, 19,25,33,35,36,38,65 but patients as old as 72 have been reported. 15,40,41 Also, congenital dermoid cysts presenting in infancy can occur, 14,33,64 with fewer than 30 cases having been reported before 1982. 19 Simultaneous occurrence of a congenital dermoid cyst and choristomatic cyst has also been reported.…”

“…62 They are generally thought to arise from germinal epithelial rests that have been enclavated during the midline closure of either the embryonic first or second branchial arches during the third or fourth week of development. 8,20,35,41,48,64 For noncongenital cases, another hypothesis is that they derive from traumatic occlusion of piliferous follicles or sebaceous glands. 8,9,45 It is thought that lesions without skin appendages may result from pneumatic implantation of surface epithelium, which then proliferates and keratinizes without producing dermal appendages.…”

Diagnosis of dermoid cyst of the floor of the mouth by fine-needle aspiration cytology: A case report

“…In cases thought to be congenital in origin, it is thought that epithelial nests become entrapped during the midline closure of the first or second branchial arches during the 3rd or 4th wk of embryologic development. [3][4][5][6] With noncongenital cases, they are thought to occur possibly as a result of traumatic occlusion of hair follicles or sebaceous glands. [7][8][9] Most commonly, dermoid cysts occur in the midline of the floor of the mouth.…”

“…1,14-18 However, they have been reported in infants and older individuals. 4,6,16,[19][20][21] Males and females are affected equally. 14,17 Cysts usually present as a slowgrowing, painless, rubbery or doughy mass that will exhibit pitting with application of pressure.…”