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Mucous retention cyst in maxillary sinus indicated by the asymmetrical blue lump to the right of the nose The most common location to find a mucocele is the inner surface of the lower lip. It can also be found on the inner side of the cheek (known as the buccal mucosa ), on the anterior ventral tongue , and the floor of the mouth .
Minor trauma to the floor of the mouth is thought to damage the delicate ducts that drain saliva from the sublingual gland into the oral cavity. [2] The lesion is a mucous extravasation cyst (mucocele) of the floor of mouth, although a ranula is often larger than other mucoceles (mainly because the overlying mucosa is thicker). [3]
Nasopharyngeal cyst refers to cystic swelling arising from midline and lateral wall of the nasopharynx. The commonest cyst arising from lateral wall is the nasopharyngeal branchial cyst, whereas the mucus retention cysts are the commonest to arise from the midline. [1] Sometimes nasopharyngeal cyst may directly refer to Tornwaldt cyst. [2]
Tornwaldt's disease is the inflammation or abscess of the embryonic cyst of pharyngeal bursa. It is located in the midline of the posterior wall of the nasopharynx. It is covered anteriorly by mucosa in the adenoid mass. It is bounded posteriorly by longus muscle. [1]
If fluid from the cyst is aspirated, the CEA level is typically elevated. [5] Confirmation of the diagnosis with tissue is rarely necessary. [5] By histopathology, IPMN is characterized on light microscopy by Mucinous epithelial cells, [6] and growth within the pancreatic ducts. [7] Mucin 5AC is a useful immunohistochemistry marker. [8]
Vocal fold cysts (also known as vocal cord cysts) are benign masses of the membranous vocal folds. [1] These cysts are enclosed, sac-like structures that are typically of a yellow or white colour. [2] They occur unilaterally on the midpoint of the medial edge of the vocal folds. [1] They can also form on the upper/superior, surface of the vocal ...
Congenital cysts of the larynx with incidence of about 1.8 in 100,000 newborns. [1] Laryngeal cysts form 4% of all laryngeal tumors [6] or about 5% of benign laryngeal lesions. [10] Prevalence is about equal between the sexes. [11]
Biliary cystadenoma and cystadenocarcinoma constitute less than 5% of intrahepatic cysts originating from the bile duct. [6] Cystadenomas in liver are often confused with hydatid cyst as their appearance on various imaging techniques is nearly same. [7] Treating cystadenomas as hydatid cyst has resulted in recurrence of the cyst. [7]