Clin Surg | Volume 6, Issue 1 | Case Report | Open Access

The Bulky Dermoid Cyst of the Floor of the Mouth

Zhihui Sun1#, Hao Yu2,3#, Zhongqiu Xu1 , Lei Gao2,3, Hong Guan4 , Hao Guo4 , Chengyu Qiu2,3* and Hong Chen2,3*

1The Affiliated Hospital of Qingdao Binhai University, Qingdao Military-civil Integration Hospital, China 2 The First Hospital of Qiqihar, Qiqihar, Heilongjiang, China 3 Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar, Heilongjiang, China 4 Research Center of Microecological Engineering Technology, Qiqihar Medical University, Qiqihar, China # These authors contributed equally to this work

*Correspondance to: Chengyu Qiu 

Fulltext PDF


Bulky dermoid cysts of the floor of the mouth are very rare and may induce functional disorder. We present a 68-year-old Chinese woman who presented a painless swelling in right mandibular. Physical examination revealed a painless, soft, poor mobility, doughlike mass swelling which was reached to the floor of the mouth, and MRI showed a circumscribed mass of about 20.0 cm ? 10.0 cm ? 12.0 cm size. After complete excision of the cyst through an extraoral approach, histology diagnosed dermoid cyst. Dermoid cyst is uncommon found in the floor of the mouth, where there is a soft, painless, associated dyspnea, dysphagia and dysarthria. Imaging may assist diagnosis. Definitive diagnosis is founded on the histology specimen. According to the location and size of the cyst on each occasion, enucleation via intraoral or extraoral approach will be chosen treatment for cyst in the floor of the mouth. Although malignant degeneration of dermoid cyst of the floor of mouth is extremely rare, there are also such situation reports. Thus, it is important to remove a cyst before the opportunity for malignancy.


Cyst; Dermoid cysts; Floor of the mouth


Sun Z, Yu H, Xu Z, Gao L, Guan H, Guo H, et al. The Bulky Dermoid Cyst of the Floor of the Mouth. Clin Surg. 2021; 6: 3207..

Subscribe to Our Newsletter