Pet Foreign Body Diagnosis & Surgery in San Jose, CA

When a dog or cat swallows something that cannot be digested or passed naturally, the object may become lodged somewhere along the gastrointestinal tract. The signs that follow depend on where the object is located and whether it is causing a partial or complete obstruction.

Common signs of a potential foreign body include repeated vomiting, a sudden refusal to eat, visible discomfort or pain when the abdomen is touched, unusual lethargy, and dehydration. Some pets may produce less stool than normal or stop producing stool altogether. Repeated retching without bringing anything up can also be a sign, particularly when the object is located in the stomach.

Diarrhea may occur in some cases, especially if the object is causing partial irritation rather than a complete blockage. Any pet showing a combination of these symptoms — particularly repeated vomiting along with appetite loss — should be evaluated by a veterinarian as soon as possible.

When you bring your pet in for a suspected foreign body, our veterinarians start with a thorough physical examination. This includes checking your pet's vital signs, assessing hydration status, and carefully palpating the abdomen to look for signs of pain, distension, or abnormal masses that could suggest an obstruction.

Blood tests are often recommended to evaluate organ function and check for dehydration, electrolyte imbalances, or signs of infection that can accompany a gastrointestinal obstruction. These results help us understand how your pet is doing overall and whether the situation may be affecting other systems.

Imaging is usually the next step. Depending on what our veterinarians suspect, we may recommend X-rays, ultrasound, or both. Each imaging modality offers different information, and using them together gives us the most complete picture of what may be happening inside your pet's digestive tract.

X-rays are a quick, widely available imaging tool that can provide valuable information when a foreign body is suspected. Some objects — such as bones, metal, and certain dense plastics — are visible on standard radiographs. Even when the object itself is not directly visible, X-rays can reveal secondary signs that suggest an obstruction is present.

These secondary signs may include unusual gas patterns in the intestines, loops of bowel that appear distended or stacked, or fluid levels that indicate material is backed up behind a blockage. Our veterinarians interpret these findings in the context of your pet's clinical signs and exam results to form a working diagnosis.

In some cases, a contrast study may be recommended. This involves administering a safe contrast agent by mouth and taking sequential X-rays to track how material moves through the digestive tract. Contrast studies can help identify partial oblocations or confirm that the gastrointestinal tract is patent when the diagnosis is not clear from standard films alone.

Ultrasound uses sound waves to create real-time images of the abdominal organs, and it can be particularly useful when X-rays do not give a definitive answer. Unlike radiographs, ultrasound does not rely on the density of the object, so it may detect items that do not show up well on X-rays — such as fabric, soft plastics, or certain organic materials.

During an abdominal ultrasound, a probe is placed on the abdomen and moved across the skin to visualize the stomach, intestines, and surrounding structures. The veterinarian can watch how the gastrointestinal tract is moving in real time, which can help identify areas where motility is reduced or absent — a finding that may suggest an obstruction is present.

Ultrasound can also reveal fluid accumulating around the intestines, thickening of the intestinal wall, or other changes that indicate the situation may be more urgent. In some cases, ultrasound findings help our team determine whether surgery is needed or whether continued monitoring may be appropriate.

Endoscopy is a minimally invasive procedure in which a thin, flexible tube with a camera and working channel is passed through the mouth and into the stomach or upper small intestine. The veterinarian can directly visualize the object and, in many cases, retrieve it using specialized instruments passed through the scope.

This approach may be appropriate when the foreign body is located in the stomach or upper gastrointestinal tract, when the object has not caused significant damage to the surrounding tissue, and when the pet's overall condition allows for the procedure. It avoids the need for a surgical incision and can result in a shorter recovery period compared to traditional surgery.

Endoscopy does have limitations. Objects that have moved beyond the stomach and deep into the intestines may not be accessible by scope. Sharp objects that have already caused damage to the intestinal wall, or objects that have created a complete obstruction with significant swelling, may not be safely retrievable endoscopically. In these situations, surgical removal is typically recommended instead.

Surgery becomes necessary when a foreign object is causing a complete or partial obstruction, when the object is sharp and at risk of perforating the intestinal wall, or when conservative management and endoscopic retrieval are not appropriate options. The goal of surgery is to remove the object safely and address any damage it may have caused to the surrounding tissue.

Before any procedure, pre-operative bloodwork is required to evaluate organ function and help our veterinarians plan the safest anesthetic protocol for your pet. During surgery, your pet's oxygen level, temperature, and vital signs are continuously monitored from induction through recovery.

Depending on where the object is located, the surgeon may perform a gastrotomy (opening the stomach) or an enterotomy (opening the intestine) to retrieve it. In some cases, a section of damaged intestine may need to be removed and the healthy ends reconnected. Your surgeon will discuss the specific approach with you based on what is found during the procedure.

When a foreign body is determined to be sitting in the stomach — particularly when endoscopic retrieval is not feasible or has not been successful — a gastrotomy may be performed. This procedure involves a single incision through the abdominal wall and into the stomach wall to directly access and remove the object.

Once the object is removed, the stomach wall is carefully closed with sutures designed to create a secure, leak-proof seal. The abdominal incision is then closed in layers. Gastrotomies are generally well-tolerated, and most pets recover well when the procedure is performed before significant damage to the stomach wall has occurred.

After surgery, your pet will be monitored closely as they recover from anesthesia. Pain management is provided, and most pets are able to begin eating small amounts of food within a day or so of the procedure. Specific post-operative instructions, including activity restrictions and medication schedules, will be provided at discharge.

When a foreign body has moved from the stomach into the small intestine and is causing an obstruction, an enterotomy may be necessary. This procedure involves making a carefully placed incision in the intestinal wall to retrieve the object. The location and size of the incision are planned based on the object's position and the health of the surrounding tissue.

If the object has caused significant damage to the intestinal wall — such as pressure necrosis, perforation, or tissue that is no viable — a segment of the affected intestine may need to be removed entirely. The healthy ends are then reconnected in a procedure called an anastomosis. Your surgeon will make this determination during the operation based on what is found.

Intestinal surgery requires careful post-operative monitoring, because the intestine heals differently than other tissues. Pets are typically kept on restricted activity and fed a bland diet during recovery. Close follow-up is important to ensure the surgical site is healing properly and that your pet is returning to normal function.

Recovery from foreign body surgery varies depending on the type of procedure performed and how much time passed before the object was removed. Pets that receive prompt treatment generally recover more quickly than those that have been obstructed for an extended period.

After surgery, your pet will be sent home with pain medication and possibly antibiotics, along with detailed discharge instructions. Activity should be restricted — typically no running, jumping, or rough play for about two weeks, or until your veterinarian confirms that healing is on track. An Elizabethan collar may be recommended to prevent your pet from licking or chewing at the incision site.

Feeding instructions will be specific to your pet's procedure. Most pets are transitioned back to their regular food gradually, starting with small, frequent meals. Monitoring for signs of complications — such as repeated vomiting, loss of appetite, swelling or discharge at the incision site, or a return of lethargy — is important in the days following surgery. A follow-up visit is typically scheduled to check on healing and remove any remaining sutures.

If you suspect your dog or cat has swallowed a foreign object, seeking veterinary evaluation promptly is one of the most important things you can do. A complete gastrointestinal obstruction can become a serious situation within hours, and early diagnosis often means more treatment options — including the possibility of non-surgical management or endoscopic retrieval.

Certain situations are particularly time-sensitive. Sharp objects such as bones, needles, or fishhooks carry a risk of perforating the gastrointestinal tract, which can lead to leakage of intestinal contents into the abdominal cavity. Long, rigid objects or objects that have become wedged can quickly compromise blood flow to the intestinal wall, leading to tissue damage that may require more extensive surgery.

Even when the situation is not immediately life-threatening, pets that are repeatedly vomiting or not eating are at risk for dehydration and electrolyte imbalances that can complicate both diagnosis and treatment. If your pet shows signs that suggest they may have swallowed something — especially repeated vomiting, retching without producing anything, or a sudden refusal to eat — call our clinic or visit during urgent care hours so we can evaluate the situation.