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  • Spinal stenosis - Symptoms and causes - Mayo Clinic
    Overview Spinal stenosis happens when the space inside the backbone is too small This can put pressure on the spinal cord and nerves that travel through the spine
  • Narrow stools: Should I be concerned? - Mayo Clinic
    Narrow stools that happen now and then probably are harmless But in some cases, narrow stools — especially if pencil thin — may be a sign that the colon is narrowing or has a blockage And that could be due to colon cancer Irritable bowel syndrome (IBS) also may cause changes in the size of your stools
  • Urethral stricture - Symptoms and causes - Mayo Clinic
    Scar tissue, which can narrow the urethra, can be due to: A medical procedure that involves putting a tool, such as an endoscope, into the urethra A tube that's put into the urethra to drain the bladder, called a catheter Trauma or injury to the urethra or pelvis
  • Aortic valve stenosis - Symptoms and causes - Mayo Clinic
    But in some people — particularly those with changes in the aortic valve at birth — calcium deposits might cause the valve to narrow at a younger age Rheumatic fever This complication of untreated strep throat can damage the heart valves It may cause scar tissue to form on the aortic valve Scar tissue can narrow the aortic valve opening
  • Coronary artery disease - Symptoms and causes - Mayo Clinic
    Symptoms of coronary artery disease may not be noticed at first Sometimes symptoms only happen when the heart is beating hard, such as during exercise As the coronary arteries continue to narrow, symptoms can get more severe or frequent A completely blocked coronary artery will cause a heart attack Common heart attack symptoms include:
  • Renal artery stenosis - Symptoms and causes - Mayo Clinic
    Fats, cholesterol and other substances (plaque) can build up in and on your kidney artery walls (atherosclerosis) As these deposits get larger, they can harden, reduce blood flow, cause kidney scarring and eventually narrow the artery Atherosclerosis occurs in many areas of the body and is the most common cause of renal artery stenosis
  • Small vessel disease - Symptoms causes - Mayo Clinic
    Small vessel disease signs and symptoms include: Chest pain, squeezing or discomfort (angina), which may get worse with activity or emotional stress
  • Arthroscopy - Mayo Clinic
    Arthroscopy (ahr-THROS-kuh-pee) is a procedure that uses a fiber-optic camera to diagnose and treat joint problems A surgeon inserts a narrow tube attached to a fiber-optic video camera through a small incision — about the size of a buttonhole The view inside the joint is transmitted to a high-definition video monitor
  • Ureteral obstruction - Symptoms and causes - Mayo Clinic
    If a ureter is too narrow and doesn't allow urine to flow completely, a tiny bulge in the ureter (ureterocele) may develop When a ureterocele develops, it's usually in the section of the ureter closest to the bladder This can block urine flow and cause urine to back up into the kidney, possibly leading to kidney damage Retroperitoneal fibrosis
  • Deviated septum - Symptoms causes - Mayo Clinic
    This blockage can make it hard to breathe This might be worse during colds or allergies that can cause nasal passages to swell and narrow Nosebleeds The surface of the nasal septum might become dry This can raise the risk of nosebleeds Noisy breathing during sleep





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