25,729 articles
Urogenital Surgical Procedures
Urogenital Surgical Procedures, MeSH D013519 (E04.950), is surgery on the urinary tract and male or female genitalia, spanning ancient lithotomy, cystoscopy, laparoscopy, and robot-assisted urologic and gynecologic operations.
Urography
Urography is a set of imaging methods visualizing the kidneys, ureters, and bladder to diagnose urinary tract disease. CTU has largely replaced IVU, while MRU remains an alternative.
Urogynecology
Urogynecology, formally Urogynecology and Reconstructive Pelvic Surgery in the United States, is the subspecialty that diagnoses and treats pelvic floor disorders in women, including pelvic organ prolapse and urinary incontinence.
Urolagnia
Urolagnia (urophilia, undinism) is a paraphilia of sexual arousal linked to urine or urination; term coined from Greek roots, earliest OED evidence 1906 in Havelock Ellis, discussed by Krafft-Ebing, lifetime prevalence about 6% of men and 4% of women.
Urolithiasis
Urolithiasis: formation of stones (calculi) in the kidney, bladder, or urethra from urinary supersaturation; multifactorial, 10-15% lifetime prevalence in developed countries. Also a Springer journal (2013-, ISSN 2194-7228) continuing Urological Research.
Urologia
Urologia (Urologia journal since 2016) is a peer-reviewed urology journal founded in 1934, official organ of the Società italiana di urologia, published by SAGE since 2018, ISSN 0391-5603, impact factor 0.7.
Urologic oncology
Urologic oncology, also called genitourinary oncology, is the specialty treating cancers of the urinary tract and male reproductive organs; its US society is the SUO (founded 1984) and its official journal is Urologic Oncology: Seminars and Original Investigations.
Urologic Surgical Procedures
Urologic surgical procedures: surgery of the urinary tract (and male genitalia, MeSH D013521), spanning cystoscopy, ureteroscopy, stone surgery, cystectomy, nephrectomy, and urinary diversion, now dominated by laparoscopic and robot-assisted approaches.
Urological Diagnostic Techniques
Urological diagnostic techniques (MeSH D003950) are methods for diagnosing urinary tract disease, spanning urinalysis, cystoscopy and ureteroscopy, urography and cross-sectional imaging, and urodynamics, from Bozzini's 1805 endoscope and Nitze's 1877 cystoscope to CT and AI-assisted analysis.
Urologists
Urologists are medical doctors and surgeons who diagnose and treat diseases of the male and female urinary tract and the male reproductive organs, from kidney stones to urologic cancers.
Urology
Urology: surgical specialty of the urinary tract and male reproductive organs, distinct from nephrology. Key facts: AUA founded 1902, first US residency Johns Hopkins 1915, German board certification 1924, da Vinci robotic surgery growth.
Urothelial carcinoma of bladder
Urothelial carcinoma of the bladder, also called transitional cell carcinoma, is a cancer arising from the urothelium and accounts for approximately 90% of all reported bladder cancers.
Urothelial carcinoma of renal pelvis
Urothelial carcinoma of the renal pelvis, a form of upper tract urothelial carcinoma (UTUC), arises from the urothelium lining the renal pelvis; 5-10% of urothelial cancers, treated by nephroureterectomy or kidney-sparing surgery.
Urothelial carcinoma of ureter
Urothelial carcinoma of the ureter, part of upper tract urothelial carcinoma (UTUC), is a rare cancer (1-2 per 100,000) linked to smoking, aristolochic acid, and Lynch syndrome, treated by nephroureterectomy or kidney-sparing surgery.
Urticarial vasculitis
Urticarial vasculitis (UV), also hypocomplementemic urticarial vasculitis (HUV, ICD-11 4A44.91), is a rare small-vessel leukocytoclastic vasculitis with wheals lasting over 24 hours, bruising, and complement-based NUV/HUV subtypes.
Urushiol
Urushiol is an oily mixture of alk(en)ylcatechols in Toxicodendron plants (poison ivy, oak, sumac) and the lacquer tree; a pro hapten oxidized in skin, causing T-cell-mediated type IV contact dermatitis in 10–50 million Americans yearly.
Urushiol-induced contact dermatitis
Urushiol-induced contact dermatitis, also called Toxicodendron or rhus dermatitis, is a T cell-mediated type IV allergic rash from urushiol oil in poison ivy, oak, and sumac, affecting 10-50 million Americans yearly, with onset 12-72 hours after contact.
Usher syndrome
Usher syndrome, also called Usher's syndrome or deafness-retinitis pigmentosa syndrome, is an autosomal recessive condition combining sensorineural hearing loss and retinitis pigmentosa; three types, about 4-17 per 100,000 people, no cure yet.
USMLE Step 1
USMLE Step 1, the first United States Medical Licensing Examination step co-sponsored by FSMB and NBME, is an 8-hour basic-science exam reported pass/fail since January 26, 2022, with a $695 fee and new 14-block format from May 14, 2026.
Usnoflast
Usnoflast (ZYIL1) is Zydus Lifesciences' oral, selective NLRP3 inflammasome inhibitor in phase 2 trials for ALS, CAPS, and ulcerative colitis; its ALS phase 2 was well tolerated but not statistically significant.
Ustekinumab
Ustekinumab (Stelara) is a human IgG1 monoclonal antibody blocking the IL-12/23 p40 subunit, approved 2008-2009 for plaque psoriasis, psoriatic arthritis, Crohn's disease, and ulcerative colitis, with biosimilars since 2024-2025.
Uterine arteriovenous malformation
Uterine arteriovenous malformation (uterine AVM, arteriovenous fistula): a rare high-flow vascular shunt between uterine arteries and myometrial veins, usually acquired after curettage, cesarean section, or abortion, causing severe bleeding; diagnosed by Doppler ultrasound, treated by embolization or medication.
Uterine artery embolization
Uterine artery embolization is an interventional radiology procedure in which particles block blood flow in both uterine arteries, shrinking fibroids as a uterine-sparing alternative to hysterectomy and controlling postpartum hemorrhage.
Uterine balloon tamponade
Uterine balloon tamponade is a procedure that controls severe postpartum hemorrhage by inflating a fluid-filled balloon inside the uterus, recommended by the World Health Organization.
Uterine cancer
Uterine cancer, also called endometrial cancer in its common form, is cancer of the uterus; the rare form is uterine sarcoma. About 68,270 US cases and 14,450 deaths expected in 2026, with 80.9% five-year survival.
Uterine Contraction
Uterine contraction (myometrial contraction), shortening of uterine smooth muscle driven by calcium, MLCK, oxytocin, and prostaglandins; powers labor, and is monitored by tocodynamometry, intrauterine pressure catheter, and electrohysterography.
Uterine fibroid
Uterine fibroid (uterine leiomyoma): benign smooth muscle tumor of the uterus, the most common benign tumor in women of childbearing age; half of women have fibroids by 50, with types submucosal, intramural, subserosal, pedunculated.
Uterine fibroids and pregnancy
Uterine fibroids and pregnancy covers how benign smooth-muscle tumors of the uterus affect fertility, miscarriage, cesarean delivery, and postpartum hemorrhage, and how they are managed during pregnancy.
Uterine hypoplasia
Uterine hypoplasia (infantile uterus, congenital small uterus; ORPHA180139, ICD-10 Q51.8) is a rare congenital underdevelopment of the uterus, simple, elongated, or malformative, causing primary amenorrhea, abdominal pain, and infertility.
Uterine Monitoring
Uterine monitoring is the measurement or recording of uterine contraction activity, used to track labor progress, guide oxytocin dosing, and assess how the fetus tolerates contractions.