Dr. Paul Ray Shin MD

It is mostly the detrusor muscle that forms the wall of the bladder, it contracts during urination and relaxes to hold the urine. The muscle is continuous at the inferior end with the internal urethral sphincter. Urination results when the detrusor muscle contracts and the urethral sphincter muscle...

Urinary tract infections (UTIs) are common worldwide, among both men and women, and they can occur at all ages. However, women are more likely to develop urinary tract infections than men. A UTI is caused by a bacterial infection in the urinary tract. When bacteria enter the urinary tract, they are...

Finasteride is an oral prescription medication in the form of film-coated tablets. It is available as a generic drug and under the brand names Propecia and Proscar. Although generic drugs are cheaper than brand-name drugs, their availability may be limited when it comes to their form or strength...

Syphilis is a venereal disease caused by the bacterium Treponema pallidum. It is sexually transmitted and takes second place among the most dangerous STDs after HIV. It has four stages, among which primary and secondary are the most infectious. It is also transmitted from an infected pregnant...

Testicular cancer is a form of cancer which affects the male testes or sex glands encased within the scrotum, a loose sac of tissue that hangs freely below the penis. Germ cells are specialized cells lining several heavily coiled tubular structures within the testes that are responsible for...

Rare are the men who have never questioned the size of their penis. Is my penis too small? Is my penis too big? These questions are placed on the list of the most common Google searches. Urologists also confirm that these are the usual concerns their patients express. What is it about penis size,...