Related Experiment Video
Updated: Mar 3, 2026

05:25
Ultrasonography of the Adult Male Urinary Tract for Urinary Functional Testing
Published on: August 14, 2019
20.4K
"Hair in the Bladder": An Unusual Finding
Luca Cindolo1, Maida Bada1, Roberto Bellocci2
1Department of Urology, ASL 2 Abruzzo, Chieti, Italy.
Journal of Endourology Case Reports
|May 4, 2017
Summary
A rare bladder stone complication, hair nidus, can occur in patients with urinary catheters. Regular hygiene and pubic hair shaving are key preventive measures for catheter users.
Area of Science:
- Urology
- Gastroenterology
Background:
- Trichobezoars, or hairballs, are rare in the GI tract, often linked to psychiatric disorders.
- Hair-related foreign bodies, or hair nidus, can form bladder stones in catheterized patients.
Observation:
- This study details a case of a 71-year-old male with a long-term catheter who developed a bladder stone from encrusted hair.
- Hair enters the bladder via catheter adherence or urethral introduction.
Findings:
- Bladder stones forming around a hair nidus are a rare complication of urinary catheterization.
- Approximately 10-15% of long-term catheter users develop urinary tract stones.
Implications:
- Recognizing hair nidus bladder stones can improve patient quality of life.
- Preventive measures include regular hygiene and shaving the pubic area for catheter users.
Related Concept Videos
Urinary Bladder
3.9K
The urinary bladder is a hollow, muscular sac that temporarily stores urine before it is expelled from the body. It can hold approximately 600 mL of urine prior to micturition. The bladder is retroperitoneal and located behind the pubic symphysis in the pelvic floor.
In males, the bladder is situated in front of the rectum, while in females, it is positioned anterior to the vagina and uterus. The bladder floor contains an inverted triangular area called the trigone, defined by the two ureteric...
In males, the bladder is situated in front of the rectum, while in females, it is positioned anterior to the vagina and uterus. The bladder floor contains an inverted triangular area called the trigone, defined by the two ureteric...
3.9K
Urine Studies I: Urinalysis
1.8K
Urinalysis is a widely used diagnostic test that analyzes urine's physical, chemical, and microscopic characteristics. Healthcare providers use it to detect and monitor various health conditions, including renal disease, urinary tract infections (UTIs), diabetes, and metabolic or systemic disorders.Components of UrinalysisUrinalysis consists of three primary components: physical, chemical, and microscopic examination. Each provides unique insights into the urine sample and, by extension, the...
1.8K
Anatomy of the Genitourinary System II: Bladder and Urethra
2.2K
The lower urinary system consists of the urinary bladder and urethra, which are essential in storing and expelling urine from the body. Together with the internal and external sphincters, these structures work together to regulate urination effectively.Anatomy of the BladderThe urinary bladder is a muscular, stretchable organ behind the pubic bone and in front of the rectum. In females, the bladder is positioned anterior to the vagina and inferior to the uterus, while in males, it is located...
2.2K
Accessory Structures of the Skin: Hair and Hair Follicles
5.0K
Hair and hair follicles are integral components of the integumentary system. Hair is a filamentous structure composed mainly of a protein called keratin. It is found on the surface of the skin throughout the body, except for areas such as the palms of the hands and soles of the feet.
Hair is a keratinous filament growing out of the epidermis. It is primarily made of dead, keratinized cells. Hair strands originate at the epidermal penetration called the hair follicle. The hair shaft is the part...
Hair is a keratinous filament growing out of the epidermis. It is primarily made of dead, keratinized cells. Hair strands originate at the epidermal penetration called the hair follicle. The hair shaft is the part...
5.0K
Ureters
1.8K
The ureters are retroperitoneal tubes located on either side of the vertebral column. They are responsible for transporting urine from each kidney to the urinary bladder. These tubes have thick walls and are approximately 25-30 cm long. Their diameter is around 10 mm at the renal pelvis, gradually narrowing to 1 mm as the ureter obliquely enters the posterior bladder wall through the ureteric orifices. The shape of these orifices is slit-like, which helps to prevent urine backflow toward the...
1.8K
Imaging Studies VI: Voiding Cystourethrography and Cystography
2.7K
Voiding Cystourethrography (VCUG) and Cystography are specialized radiographic procedures used to examine the structure and function of the bladder and urethra.Voiding Cystourethrography (VCUG)A Voiding Cystourethrogram (VCUG) is a diagnostic imaging procedure that assesses the anatomy and function of the lower urinary tract. It focuses on the bladder, bladder neck, and urethra, helping detect abnormalities such as vesicoureteral reflux (VUR)—the backward or reverse flow of urine into the...
2.7K

