Congenital Epidermoid Cyst Results in Muscle Fusion Defect in the Upper Lip

Abstract

Epidermoid cysts are rarely detected malformations in the oral cavity. Their development sites are the sublingual, submaxillary, and submandibular spaces. In this paper, we report a three-month-old infant who was admitted to our hospital due upper lip swelling. Magnetic resonance imaging showed that she had a two-centimeter cystic lesion and fusion defects of orbicularis oris muscle. The cyst was surgically removed and histopathological diagnosis was “epidermoid cyst.” In recent literature, we could not find reports related to orbicularis oris muscle fusion defects because of epidermoid cyst.

A rare case of dermoid cyst arising in the upper lip

“…Nearly 34% of dermoid cysts are found in the head and neck, of which 6.5% are located in the floor of the mouth [ 8 , 9 ]. Seven cases of dermoid cysts arising from the lip have been reported in previous studies, thereby underscoring the rarity of arising from this site ( Table 1 ) [ 3 , [10] , [11] , [12] , [13] , [14] , [15] ]. These cysts are observed not only in young but also in middle-aged individuals.…”

Epidermoid Cyst of Uvula: Presentation of Case. Review of the Literature

“…Los quistes epidermoides de la cavidad oral, en adultos, se ven sobre todo en el suelo de la cavidad oraly en otros subsitios, incluyendo la labial, la tonsila palatina y en el paladar blando. En los lactantes la incidencia es más alta en el suelo de la cavidad oral y menor en el paladar blando (Esquivel Pedraza et al;Dogan & Bucak, 2014;Uppala et al). El caso presentado corresponde a un lactante de 6 meses de edad, con un tumor quístico localizado en la úvula palatina.…”

An Unusual Occurrence of Epidermoid Cyst in the Inner Mucosa of the Upper Lip: A Case Report

“…Normally, secondary infection is unusual, but it can cause life-threatening situations when it occurs [9]. In rare cases, the formation of a sinus tract from the oral cavity to the skin and muscle fusion defects have been reported [10]. There are studies of malignant transformation in long-standing, untreated epidermoid cysts [11,12].…”

“…Kim and Hong [16] described a giant epidermoid cyst in a patient wearing a denture. Dogan and Bucak [10], Phukan et al . [17], Mahalakshmi et al .…”