Why it is difficult to find the cause of chronic vomiting and diarrhea in cats through ultrasound alone

Cats often experience repetitive vomiting or diarrhea, and many owners worry because they cannot find the exact cause even after completing blood tests or ultrasound examinations. According to a Nyangshin TV video, when these chronic digestive symptoms persist, an endoscopy can be used to confirm the disease and determine the direction of treatment.

The Decisive Difference Between Ultrasound and Endoscopy

Many owners wonder why additional endoscopy is necessary even after an ultrasound examination has been completed. In the video, Director Ko Tae-hun emphasizes that the information obtained from ultrasound and endoscopy is different. Ultrasound examinations are useful for checking morphological changes, such as the thickness of the stomach or intestinal walls and tumors. On the other hand, the key difference is that endoscopy not only allows for direct observation of the mucosal state inside the gastrointestinal tract but also enables a pathological definitive diagnosis through the most important process, 'biopsy.'

In particular, it is very difficult to distinguish between Inflammatory Bowel Disease (IBD) and small cell lymphoma, which commonly appear in cats, using only symptoms or imaging tests (X-ray, ultrasound). The video explains that even if ultrasound shows findings of thickened intestines, it must be confirmed through a biopsy to determine whether this is simple inflammation or a tumor. This is because the future treatment and management plans can change completely depending on the biopsy results.

Three Situations Where Endoscopy Should Be Considered

Since endoscopy must be accompanied by general anesthesia, it is not unconditionally performed for all vomiting symptoms. The video summarizes that endoscopy can be considered in the following three cases:

First, when digestive-related symptoms such as vomiting, diarrhea, weight loss, or loss of appetite recur or persist for a long time. Second, when the cause is not clearly identified even after primary tests such as blood tests, X-rays, and ultrasounds have been conducted. Third, when there is a possibility that the direction of treatment will change completely depending on the biopsy results. In particular, since the management directions for IBD and lymphoma are vastly different, an accurate diagnosis is essential.

The endoscopy procedure takes about 20 minutes, so the burden regarding anesthesia is relatively low. In the actual endoscopy screen shown in the video, the mucosa is observed to be red and inflamed or the surface to be bumpy and hard, rather than being in a normal 'castella' (sponge cake) like state. If such abnormal findings are discovered, tissue from the corresponding area is collected to proceed with the final diagnosis.

When an owner is recommended to undergo an endoscopy at a hospital, asking the veterinarian, "How can the child's diagnosis or future treatment plan change through this test?" will be of great help in judging the diagnostic value of the endoscopy. Conducting accurate tests at the appropriate time is key to preventing the progression of the disease and starting optimal treatment.