About
Bio
In my day job, I am an academic urologist affiliated with a large medical school. I take care of patients, teach medical students and residents, and do research. One of my areas of interest is to use technology to reach patients more efficiently without sacrificing quality.
SpecialtiesDoctors may have more than one area of specialty interest. Board certification in a specialty area means the doctor has completed formal training and has practice experience in that specialty, and has passed the certification examination from the corresponding accredited medical specialty board.
Doctors may have more than one area of specialty interest. Board certification in a specialty area means the doctor has completed formal training and has practice experience in that specialty, and has passed the certification examination from the corresponding accredited medical specialty board.
Urology
Urologic Oncology
Licenses
United States: California
Doctor Q&A
28 Answers
11 Agrees
The number of answers this doctor has agreed with.
A 22-year-old male asked:
Dr. Tin Ngoanswered
Urology 16 years experience
Many things: Urinary tract infection, structure, sexually transmitted infection, prostatitis, chronic pelvic pain
Created for people with ongoing healthcare needs but benefits everyone.
717 viewsReviewed >2 years ago
A 31-year-old male asked:
Dr. Tin Ngoanswered
Urology 16 years experience
Maybe: Often times, people equate orchalgia (testicular pain) with epididymitis. Technically, epididymitis results from inflammation/infection of the epididy... Read More
Created for people with ongoing healthcare needs but benefits everyone.
726 viewsAnswered >2 years ago
A 53-year-old female asked:
Dr. Tin Ngoanswered
Urology 16 years experience
Not always: Sometimes mild cystoceles don't bulge out unless you're bearing down. Severe cystoceles bulge out at rest. Sometimes it's an enterocele or rectocele t... Read More
Created for people with ongoing healthcare needs but benefits everyone.
722 viewsAnswered >2 years ago
A 18-year-old female asked:
Dr. Tin Ngoanswered
Urology 16 years experience
Yes: It is possible. Unlikely but possible. It just takes 1 sperm. Urination doesn't clear away "all sperm".
Created for people with ongoing healthcare needs but benefits everyone.
724 viewsAnswered >2 years ago
A member asked:
Dr. Tin Ngoanswered
Urology 16 years experience
See a urologist: If you have a bell clapper you could also elect for an orchiopexy prophylactically to make sure you don't develop a torsion. This is especially true i... Read More
Created for people with ongoing healthcare needs but benefits everyone.
717 viewsReviewed >2 years ago
A member asked:
Dr. Tin Ngoanswered
Urology 16 years experience
It should be removed: Bladder stone removal surgery is not difficult. Why can't it be removed?
Created for people with ongoing healthcare needs but benefits everyone.
718 viewsAnswered >2 years ago
A female asked:
Dr. Tin Ngoanswered
Urology 16 years experience
Not long: Sperm only lives a couple of days in the uterus. The pre-ejaculatory fluid contains some sperm. When they say you got pregnant only the 8th, they prob... Read More
Created for people with ongoing healthcare needs but benefits everyone.
724 viewsAnswered >2 years ago
A 24-year-old male asked:
Dr. Tin Ngoanswered
Urology 16 years experience
Sort of: Chlamydia can travel from the urethra to the vas to the epididymis and cause infection there and cause infertility by damaging the epididymis which is... Read More
Created for people with ongoing healthcare needs but benefits everyone.
717 viewsAnswered >2 years ago
A female asked:
Dr. Tin Ngoanswered
Urology 16 years experience
Yes: This is very possible. You need a urinalysis and a urine culture.
Created for people with ongoing healthcare needs but benefits everyone.
717 viewsReviewed >2 years ago
A male asked:
Dr. Tin Ngoanswered
Urology 16 years experience
Stent pain: Ureteral stents, sometimes called JJ (double-J) stents can cause flank, back, and bladder pain. What you describe is not uncommon.
Created for people with ongoing healthcare needs but benefits everyone.
717 viewsAnswered >2 years ago
A 29-year-old female asked:
Dr. Tin Ngoanswered
Urology 16 years experience
See a doctor: If you have sterile pyuria (WBC in urine without infection) you need to be evaluated and TB needs to be ruled out.
Created for people with ongoing healthcare needs but benefits everyone.
717 viewsAnswered >2 years ago
A 62-year-old male asked:
Dr. Tin Ngoanswered
Urology 16 years experience
Get it treated: 1.2 CM = 12 mm so I would say it is the same size. You should get this treated either with shockwave lithotripsy or ureteroscopy. Glad to talk with yo... Read More
Created for people with ongoing healthcare needs but benefits everyone.
717 viewsAnswered >2 years ago
A 18-year-old male asked:
Dr. Tin Ngoanswered
Urology 16 years experience
Will it vs can it: It is possible. Will it? That depends on how much sperm there was and how much urine there was. Can it? Yes. Use condoms.
Created for people with ongoing healthcare needs but benefits everyone.
717 viewsAnswered >2 years ago
A 23-year-old male asked:
Dr. Tin Ngoanswered
Urology 16 years experience
This is normal: These are just superficial veins in the skin of your scrotum and are normal.
Created for people with ongoing healthcare needs but benefits everyone.
726 viewsAnswered >2 years ago
A 20-year-old female asked:
Dr. Tin Ngoanswered
Urology 16 years experience
Yes and no: You can talk to your gynecologist about this, but I would recommend an appointment with a sexual disorder specialist. Most general gynecologists recei... Read More
Created for people with ongoing healthcare needs but benefits everyone.
593 viewsAnswered >2 years ago
A 38-year-old female asked:
Dr. Tin Ngoanswered
Urology 16 years experience
Bladder needs time: A urine infection can cause damage to the inner lining of the bladder. After the antibiotics eradicate the infection, the bladder remains damaged and ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
593 viewsReviewed >2 years ago
A 53-year-old female asked:
Dr. Tin Ngoanswered
Urology 16 years experience
Vaginoplasty: No. The pelvic floor muscles are deeper. The opening or introitus stretches with childbirth and age. There is a surgery to make the opening smaller wh... Read More
Created for people with ongoing healthcare needs but benefits everyone.
722 viewsAnswered >2 years ago
A 18-year-old female asked:
Dr. Tin Ngoanswered
Urology 16 years experience
Probably: It probably kills some but remember there are hundreds of millions in the seminal fluid so this is not a good form of birth control.
Created for people with ongoing healthcare needs but benefits everyone.
722 viewsAnswered >2 years ago
A 18-year-old female asked:
Dr. Tin Ngoanswered
Urology 16 years experience
No: No this does not get rid of all the sperm. The best practice is to use birth control.
Created for people with ongoing healthcare needs but benefits everyone.
724 viewsAnswered >2 years ago
A 22-year-old male asked:
Dr. Tin Ngoanswered
Urology 16 years experience
Neosporin: Antibiotic ointment like Neosporin or petroleum jelly usually protects these minor injuries so they can heal.
Created for people with ongoing healthcare needs but benefits everyone.
726 viewsAnswered >2 years ago
A 26-year-old female asked:
Dr. Tin Ngoanswered
Urology 16 years experience
Other causes than UT: If your symptoms don't go away with antibiotics, you may have another condition that causes similar symptoms. You should see your doctor or a urologis... Read More
Created for people with ongoing healthcare needs but benefits everyone.
726 viewsReviewed >2 years ago
A 23-year-old female asked:
Dr. Tin Ngoanswered
Urology 16 years experience
No: No. They only do preimplantation genetic testing on the fertilized embryo. The problem is the process of testing a single sperm to look for abnormalit... Read More
Created for people with ongoing healthcare needs but benefits everyone.
724 viewsAnswered >2 years ago
A 18-year-old female asked:
Dr. Tin Ngoanswered
Urology 16 years experience
Because: Many of the sperm are damaged (two heads, two tails, no tail, etc.) and many aren't good swimmers. It's a long distance from the vagina to the uterus ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
722 viewsAnswered >2 years ago
A 45-year-old male asked:
Dr. Tin Ngoanswered
Urology 16 years experience
Sort of: A urine culture does not detect WBC in the urine. But the culture is usually sent with a urinalysis which does.
Created for people with ongoing healthcare needs but benefits everyone.
726 viewsAnswered >2 years ago
A female asked:
Dr. Tin Ngoanswered
Urology 16 years experience
No: This is not normal. Testosterone can put you at higher risk for developing blood clots. A blood clot in the deep veins in your leg can cause swelling.... Read More
Created for people with ongoing healthcare needs but benefits everyone.
724 viewsReviewed >2 years ago
A 28-year-old female asked:
Dr. Tin Ngoanswered
Urology 16 years experience
Need to see a doctor: Visible blood in the urine with no pain needs to be a thoroughly evaluated by a urologist. It can be a sign of a serious problem.
Created for people with ongoing healthcare needs but benefits everyone.
722 viewsAnswered >2 years ago
A 21-year-old male asked:
Dr. Tin Ngoanswered
Urology 16 years experience
See a doctor: Could be a cyst or ingrown hair. You should get it checked out. If you're concerned about penile cancer, it isn't likely that based on what you are de... Read More
Created for people with ongoing healthcare needs but benefits everyone.
717 viewsAnswered >2 years ago
A 18-year-old male asked:
Dr. Tin Ngoanswered
Urology 16 years experience
Time will tell: Ingrown hairs won't heal completely so time will tell you what it is
Created for people with ongoing healthcare needs but benefits everyone.
717 viewsAnswered >2 years ago
TestimonialsRecommendations and Thank you notes are endorsements given from patients or other doctors.
Recommendations and Thank you notes are endorsements given from patients or other doctors.
8
Thank you notes
HealthTap member
Your answer was very helpful, thanks! You've replied to many of my questions! THANK YOU so much, really thx!
HealthTap member
This was very helpful. Thanks! Thanks, I am very grateful.
HealthTap member
Your answer was very helpful! Thanks :)
Education & Training
Medical/Graduate school
Wake Forest University School of Medicine, NC
Graduated 2007MD
Residency
STANFORD HOSPITAL
Completed 2013
Affiliations
Stanford Hospital and Clinics
Santa Clara Valley Medical Center
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