Hi stranger! Signing up for MypetMD is easy, free and puts the most relevant content at your fingertips.

Get Instant Access To

  • 24/7 alerts for pet-related recalls

  • Your own library of articles, blogs, and favorite pet names

  • Tools designed to keep your pets happy and healthy



or Connect with Facebook

By joining petMD, you agree to the Privacy Policy.

PetMD Seal

Narrowing of Pyloric Canal in Dogs

Chronic Hypertrophic Pyloric Gastropathy in Dogs

 

Chronic hypertrophic pyloric gastropathy, or pyloric stenosis, or, is the narrowing of the pyloric canal due to an overgrowth of muscles of the region. This region of the stomach connects with the first part of the small intestine called the duodenum. The exact cause of the disease is still unknown, but it has been found to be either congenital (existing at birth) in nature or acquired later in life.

 

Cases of congenital hypertrophic pyloric stenosis is found to be common in the boxer, Boston terrier, and bulldog. The acquired disease, on the othe hand, is more common in the Lhasa apso, shih tzu, Pekingese, and poodle. Males are also more predisposed to this disease than females.

 

Symptoms and Types

 

The severity of symptoms directly correlates to the extent of the pyloric canal's narrowing; these include chronic, intermittent vomiting (often several hours after eating), loss of appetite, and weight loss. Vomiting may contain undigested or partially digested food, and does not settle with the administration of drugs.

Causes

 

The exact cause for chronic hypertrophic pyloric gastropathy is still unknown, though it is believed to be either congenital (existing at birth) or acquired later in life. Risk factors that may play a role in influencing the disease process include:

 

  • Tumors
  • Chronic stress
  • Chronic gastritis
  • Stomach ulcers
  • Chronic increase in gastrin (hormone that stimulate secretion of HCL in stomach) levels

 

Diagnosis

 

Your dog's veterinarian will take a detailed history from you and perform a complete physical examination and laboratory tests on the animal. The results of routine laboratory tests, including complete blood profile, biochemistry profile, and urinalysis, may be variable depending upon the underlying cause. In dogs with severe ulceration, for example, anemia may be present. X-rays, meanwhile, may reveal a distended stomach due to stenosis of the pyloric canal. For more detailed results, your veterinarian may perform a gastrointestinal barium contrast study, in which barium sulfate is given orally to help highlight the location and extent of the narrowing on X-rays.

 

 

Another technique called fluoroscopy is sometimes employed. This imaging technique obtains real-time moving images of internal structures of the dog on camera with the use of a fluoroscope. The veterinarian may also employ endoscopy for detailed evaulation, in which he or she will look directly into the stomach and duodenum using an endoscope, a rigid or flexible tube that is inserted into the stomach and duodenum to visually inspect and take pictures of the region. Abdominal ultrasonography may also help in identifying the narrowing of the pyloric canal.

 

 

Related Articles

Regurgitation in Dogs
Regurgitation refers to the process in which the dog's stomach contents (i.e., food)...
READ MORE
Stomach Disorder (Loss of Motility) in Dogs
The spontaneous peristaltic (involuntary, wavelike) movements of the stomach muscles...
READ MORE
Canine Coronavirus Infection in Dogs
A canine coronavirus infection (CCV) is a highly contagious intestinal disease that...
READ MORE

Do you have an emergency kit for your pet(s)?

  • Lifetime Credits:
  • Today's Credits:
Hurry Before All Seats are Taken!
Enroll
Be an A++ Pet Parent! Take fun & free courses to earn badges & certifications. Choose a course»
Search dog Articles

 

Latest In Dog Nutrition

How Obesity May Shorten Your Pet's Lifespan
Obesity is a nationwide epidemic for our pets. Unfortunately, being obese can shorten...
READ MORE
Pet Food Ingredients that Promote Longer Life
Pet foods, in order to promote a healthy long life, must be balanced and complete...
READ MORE
The Role of Exercise in Pet Weight Loss
Exercise is beneficial for our pets in many ways, including weight loss, and here's...
READ MORE
Around the Web
MORE FROM PETMD.COM