WordNet

the physical condition of blocking or filling a passage with an obstruction (同)blockage
any structure that makes progress difficult (同)obstructor, obstructer, impediment, impedimenta
getting in someones way
the act of obstructing; "obstruction of justice"
duct through which urine is discharged in most mammals and which serves as the male genital duct
of or relating to the urethra

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1. 尿路閉塞および水腎症の臨床症状および診断 clinical manifestations and diagnosis of urinary tract obstruction and hydronephrosis
2. 男性における尿道狭窄疾患の治療 treatment of urethral stricture disease in men
3. 後部尿道弁のマネージメント management of posterior urethral valves
4. 尿道カルンクル urethral caruncle
5. 女性における術後尿閉 postoperative urinary retention in women

Lopez Pereira P, Martinez Urrutia MJ, Espinosa L, Jaureguizar E.SourceUnit of Paediatric Urology and Nephrology, University Hospital "La Paz", Madrid, Spain. Electronic address: plpuro@hotmail.com.
Journal of pediatric urology.J Pediatr Urol.2013 Oct;9(5):590-6. doi: 10.1016/j.jpurol.2013.06.007. Epub 2013 Jul 18.
Posterior urethral valves (PUV) are the most common congenital cause of bladder outlet obstruction in infancy, and it is the effect of this obstruction on the bladder and the kidneys that will decide a patient's prognosis. With the improvements in diagnosis and treatments, what was previously a poor
PMID 23871421

Smith MD, Seth JH, Fowler CJ, Miller RF, Panicker JN.SourceDepartment of Uro-neurology, National Hospital for Neurology and Neurosurgery, , London, UK.
Practical neurology.Pract Neurol.2013 Oct;13(5):288-91. doi: 10.1136/practneurol-2012-000478. Epub 2013 Mar 29.
Urinary retention is a common problem, most often due to an anatomical lesion in the urinary tract causing obstruction, such as a urethral stricture or prostate enlargement. However, a subset of patients have no structural urological lesion, and so require neurological evaluation. We present a patie
PMID 23542501

WATANABE Toshifumi,MISHINA Mika,SAKURAI Yohei
Journal of Veterinary Medical Science 76(7), 1039-1043, 2014
… After a series of diagnostic imaging, vaginal obstruction was suspected by vaginal fluid retention. … In the present case, the cyst was curable by the entire resection of the cyst lining membrane, which could eradicate all the secretory cells with least damage to the urethral vasculature and innervation. …
NAID 130003391306

寺脇幹,古村眞,金森豊,杉山正彦,鈴木完,小西健一郎,上岡克彦,長谷川雄一,山崎雄一郎,岩中督
日本小児外科学会雑誌 = Journal of the Japanese Society of Pediatric Surgery 49(5), 1027-1031, 2013-08-20
NAID 10031185853