retention cyst


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retention cyst

[ri′ten·chən ‚sist]
(medicine)
A cyst caused by obstructed outflow of secretion from a gland.
References in periodicals archive ?
Association between the seasonal changes and mucous retention cyst of maxillary antrum in cone beam computed tomography images in a sample population of Isfahan, Iran.
Non-neoplastic cystic changes include retention cysts caused by ductal obstruction and pseudocysts caused by tumor-associated pancreatitis.
The differential diagnosis of simple mucinous cysts of the pancreas comprises 3 main entities that often have overlapping clinical and histopathologic features: neoplastic mucinous cysts, such as IPMN and MCN, and nonneoplastic entities such as retention cysts. Clinically, MCNs usually present at an earlier age than simple mucinous cysts or IPMNs (Table 2).
By contrast, mucous retention cysts are typically limited to the sinus cavity in location.
There are two types of mucous cysts, based on the histology of the cyst wall; a mucous extravasation cyst formed by mucous pools surrounded by granulation tissue and mucous retention cyst with an epithelial lining.8,12 Salivary mucocele are common in the lower lip but may occur in other locations too.13 The most common sites for the appearance of extravasation mucocele is in the lower lip, tongue being the second most common followed by the buccal mucosa, palate and rarely in the retromolar area and posterior dorsal area of the tongue.3
Coexistence of mucous retention cyst and basal cell adenoma arising from the lining epithelium of the cyst.
The term mucus retention cyst is used to describe a cyst with retained mucin which is lined by ductal epithelium.
AIT sounds like a mucous retention cyst. This is where a mucous gland becomes blocked and then swells as it fills with mucous.
The non-neoplastic category comprised of- 1) Cystic lesions like epidermal inclusion cyst (EIC), thyroglossal cyst and mucocele/ mucus retention cyst; 2) Inflammatory like non-specific acute and chronic inflammation/ abscess or granulomatous lesion; 3) Vascular lesions; 4) Parasitic infestation like cysticercosis.
In her paranasal sinus tomography scan, both maxillary sinuses were observed to have a soft-tissue density consistent with a retention cyst and choanal polyp extending from the choana to the nasopharynx (Figure 1c, 1d).
A solitary nodule occurring at the tip of the tongue in a child may be a retention cyst, a benign tumor like rhabdomyoma or granular cell tumor or a malignant tumor like lymphoma, PNET or Rhabdomyosarcoma.
It is therefore a type of a retention cyst. It can also be called an epidermoid cyst more correctly, because it is lined by stratified squamous epithelium.