WordNet

commit a sin; violate a law of God or a moral law (同)transgress, trespass
violent and excited activity; "they began to fight like sin" (同)hell
estrangement from god (同)sinfulness, wickedness
an act that is regarded by theologians as a transgression of Gods will (同)sinning
the 21st letter of the Hebrew alphabet
any of various air-filled cavities especially in the bones of the skull

PrepTutorEJDIC

〈U〉(宗教・道徳上の)『罪』 / 〈C〉(宗教・道徳上の)『罪の行為』,罪悪 / 〈C〉《特におどけて》違反(過失)の行為 / (宗教・道徳上の)おきてを破る,罪を犯す / (…に)違反(過失)をする,背く《+『against』+『名』》
sine
洞(どう)(骨や組織の中の穴・くぼみなど);静脈洞

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2017/11/14 19:04:19」(JST)

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On either side of the laryngeal orifice in humans is a recess, termed the piriform sinus (also piriform recess, pyriform sinus, piriform fossa, or smuggler's fossa), which is bounded medially by the aryepiglottic fold, laterally by the thyroid cartilage and thyrohyoid membrane. The fossae are involved in speech.

The term "piriform," which means "pear-shaped," is also sometimes spelled "pyriform" (as in the diagram on this page.)

Deep to the mucous membrane of the piriform fossa lie the recurrent laryngeal nerve as well as the internal laryngeal nerve, a branch of the superior laryngeal nerve.^[1] The internal laryngeal nerve supplies sensation to the area, and it may become damaged if the mucous membrane is inadvertently punctured.

The piriform sinus is a subsite of the hypopharynx. This distinction is important for head and neck cancer staging and treatment.^[2]

Clinical significance

This sinus is a common place for food to become trapped; if foreign material becomes lodged in the piriform fossa of an infant, it may be retrieved nonsurgically. If the area is injured (e.g., by a fish bone), it can give the sensation of food stuck in the subject's throat.

The persistency of the piriform sinus (especially on the left side) is a common cause of acute thyroiditis in children and adolescents. Local anesthesia can be given here because of the presence of the internal laryngeal nerve underneath the mucous membrane.

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

^ Moore, K.L., & Agur, A.M.R (2007). Essential Clinical Anatomy: Third Edition. Baltimore: Lippincott Williams & Wilkins. ISBN 978-0-7817-6274-8
^ AJCC Cancer Staging Handbook: From the AJCC Cancer Staging Manual, Sixth Edition. Ed. Frederick L. Greene, M.D. page 48.

External links

Anatomy photo:31:17-0105 at the SUNY Downstate Medical Center - "Pharynx: The Laryngopharynx"

UpToDate Contents

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1. 早期（ステージIおよびII）の頭頸部癌の治療：下咽頭 treatment of early stage i and ii head and neck cancer the hypopharynx
2. 局所進行性（ステージⅢおよびⅣ）頭頚部癌の治療：咽頭および下咽頭 treatment of locoregionally advanced stage iii and iv head and neck cancer the larynx and hypopharynx
3. 小児および思春期における化膿性甲状腺炎 suppurative thyroiditis in children and adolescents
4. 鼻症状の原因：概要 etiologies of nasal symptoms an overview
5. 副鼻腔癌 paranasal sinus cancer

English Journal

Indirect computed tomography lymphography identifies lymph node metastasis in rabbit pyriform sinus VX2 carcinoma.

Shen NA1, Xu X2, Sha Y3, Wu H2.
Oncology letters.Oncol Lett.2015 Apr;9(4):1802-1806. Epub 2015 Jan 27.
Indirect computed tomography lymphography (CT-LG) could be used to determine the regional spread of cancer and assess lymphatic function by the interstitial delivery of diagnostic agents. Few studies have been reported on its use in pyriform sinus carcinoma. The aim of the present study was to estab
PMID 25789046

A branchial cyst of the pyriform fossa transoral laser resection: a case report.

Abdelfattah HM1, Ahmed ME, El-Rabie Ahmed M, Ahmed MA, Moussa AE.
European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery.Eur Arch Otorhinolaryngol.2015 Mar 5. [Epub ahead of print]
Pyriform sinus malformations represent rare third and fourth branchial anomalies. Fistulae at the latter site were initially described and make up less than 1 % of all brachial anomalies. They may be discovered incidentally, or may present as a neck mass with recurrent infection, dysphagia, or airw
PMID 25740470

Metastatic small cell neuroendocrine carcinoma of the pyriform sinus evaluated by (18)F-FDG PET/CT.

Treglia G1, Bongiovanni M2, Paone G3, Ruberto T3, Parvex-Leoni S2, Giovanella L3.
Revista española de medicina nuclear e imagen molecular.Rev Esp Med Nucl Imagen Mol.2015 Mar-Apr;34(2):125-7. doi: 10.1016/j.remn.2014.04.006. Epub 2014 Jul 9.
PMID 25018134

Japanese Journal

頭頸部癌における導入化学療法

耳鼻咽喉科臨床 109(3), 147-154, 2016
NAID 130005131642

臨床研究・症例報告急性化膿性甲状腺炎と甲状腺周囲軟部組織蜂窩織炎を伴った梨状窩瘻の1例

小児科臨床 68(2), 233-238, 2015-02
NAID 40020328332

義歯の咽頭での停留により遷延した誤嚥性肺炎の1例

Progress of Digestive Endoscopy 87(1), 84-85, 2015
NAID 130005119153

★リンクテーブル★

リンク元	「梨状窩」
関連記事	「pyriform」

「梨状窩」

Pyriform sinus
	Pyriform sinus, a part of hypopharynx
	The entrance to the larynx, viewed from behind, with Pyriform sinus labeled at bottom left.
Details
Identifiers
Latin	recessus piriformis, sinus piriformis
Dorlands; /Elsevier	r_05/12696766
TA	A05.3.01.024
FMA	55067
	Anatomical terminology [edit on Wikidata]