Waldeyer's ring

Waldeyer's ring

[′väl‚dī·ərz ‚riŋ]
(anatomy)
A circular arrangement of the lymphatic tissues formed by the palatine and pharyngeal tonsils and the lymphatic follicles at the base of the tongue and behind the posterior pillars of the fauces.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Further, considering the tendency for cystic metastasis into the neck of squamous cell carcinomas of the Waldeyer's ring, it should be born in mind that many cystic neck masses that are deemed to be benign may, even if rarely, contain malignant tumor metastases (5).
Clinical characteristics, pathological distribution, and prognostic factors in non-Hodgkin lymphoma of Waldeyer's ring: nationwide Korean study.
Non-Hodgkin's lymphomas (NHLs) are known to affect lymphoid tissues in the Waldeyer's ring. Typical histology of nasopharyngeal lymphoma is diffuse large B-cell lymphoma.
It forms part of Waldeyer's ring which comprises of lymphoid tissue of palatine tonsils, lingual tonsils, posterior pharyngeal wall tonsils and adenoids.
In the Western population, 5%-10% of all cases of primary or secondary NHL occur in the Waldeyer's ring, which invloves the palatine tonsils, lymphoid tissue of the nasopharynx, soft palate, and base of the tongue.
Bone marrow, Waldeyer's ring, and gastrointestinal tract are more affected by the extranodal involvement of MCL.
Extranodal involvement is often seen in the gastrointestinal tract and Waldeyer's ring. In most cases, the abovementioned organs are diffusely involved and the disease is generally diagnosed in later stages.
Some of the important contents of the suprahyoid neck are the mucosa, lymphoid tissue of Waldeyer's ring (adenoids, tonsils), and minor salivary glands.
As symmetrical tracer uptake can be frequently observed in the Waldeyer's ring and the pharyngeal and laryngeal musculature, only asymmetrical, focal tracer uptake compared with the background found in these locations was included in the analysis.
Although lymphomas often present in Waldeyer's ring of the pharynx, involvement of the oral cavity, larynx, and hypopharynx is exceedingly uncommon [7].
The most frequent sites of involvement are the lymph nodes, spleen, bone marrow, peripheral blood, and Waldeyer's ring with nonhematopoietic sites such as gastrointestinal tract, soft tissue, skin, ocular adnexa, breast, and testis being also involved, often in the context of systemic disease [2].