Tumors: Are They the Same as Stomach Cancer? - Gastroenterology and Hepatology

Is a tumor equivalent to stomach cancer?

Hello Doctor, I would like to ask if a tumor is equivalent to stomach cancer or if there is a correlation? Can abdominal ultrasound be used for diagnosis? If the stool does not appear dark or black, can gastrointestinal diseases be ruled out? Also, is a nasogastric tube inferior to an oral gastroscope? Recently, I have been experiencing a sound in my abdomen that is not like bowel sounds.
It feels as if my stomach has consumed a lot of water.
Sometimes, when I get up from sitting or move around, I suddenly feel this sensation of my stomach having a lot of water, even though I haven't drunk any.
Additionally, when I press about 15 centimeters above my navel on the right side (just below my right chest), I can feel a sound of water or air.
Is there a connection to this? Lastly, can blood tests accurately detect stomach cancer or related diseases? Thank you very much for taking the time to answer my questions.
Thank you.

Buju Ming, 30~39 year old female. Ask Date: 2018/04/11

Dr. Chen Qifeng reply Gastroenterology and Hepatology

The definitive diagnosis of gastric tumors or gastric cancer requires an upper gastrointestinal endoscopy; ultrasound and blood tests are insufficient.
The presence of melena suggests gastrointestinal bleeding, but ulcers or tumors in the gastrointestinal tract do not necessarily result in bleeding.
The major drawback of a nasogastric endoscopy is that if procedures such as polypectomy are needed, the working channel cannot accommodate instruments.
Your symptoms likely indicate poor gastric emptying, and to determine the cause, an upper gastrointestinal endoscopy is necessary.

Reply Date: 2018/04/11

More Info

Understanding tumors and their relationship to stomach cancer is a multifaceted topic that requires a careful examination of definitions, diagnostic methods, and symptoms.
Firstly, it is essential to clarify that not all tumors are cancerous. Tumors can be classified as benign (non-cancerous) or malignant (cancerous). Stomach cancer, specifically known as gastric cancer, is a type of malignant tumor that arises from the lining of the stomach. Therefore, while all stomach cancers are tumors, not all tumors are stomach cancers. Tumors can develop in various organs and tissues throughout the body, and their nature (benign or malignant) depends on their cellular characteristics and behavior.

Regarding diagnostic methods, abdominal ultrasound can be a useful tool in identifying abnormalities in the abdominal organs, including the stomach. However, it is not the definitive method for diagnosing stomach cancer. Ultrasound can help visualize masses or fluid collections, but it may not provide enough detail to confirm the presence of cancer. More definitive diagnostic procedures include endoscopy (such as an upper gastrointestinal endoscopy) and biopsy, where tissue samples are taken for histological examination.

You mentioned that your stool does not appear black or tarry, which is often a sign of gastrointestinal bleeding. While the absence of these symptoms may reduce the likelihood of certain gastrointestinal diseases, it does not entirely rule out the possibility of conditions such as stomach cancer or other gastrointestinal issues. Symptoms can vary widely, and some individuals may not exhibit obvious signs even in the presence of significant disease.

As for the comparison between nasal gastric tubes and oral endoscopy, both methods have their uses. Oral endoscopy is generally preferred for direct visualization of the stomach and obtaining biopsies, as it allows for a more comprehensive examination of the upper gastrointestinal tract. Nasal gastric tubes are typically used for feeding or draining stomach contents rather than for diagnostic purposes.

The sensation you describe in your abdomen, such as the feeling of water sloshing around, could be related to various factors, including gastrointestinal motility issues, fluid accumulation, or even gas. If this sensation is persistent or accompanied by other symptoms (such as pain, changes in bowel habits, or weight loss), it is advisable to consult a healthcare provider for further evaluation.

Blood tests can provide valuable information regarding overall health and may indicate the presence of certain markers associated with stomach cancer, such as elevated levels of specific tumor markers (e.g., CEA or CA 19-9). However, these tests are not definitive for diagnosing stomach cancer. They can suggest the need for further investigation but should be interpreted in conjunction with clinical findings and imaging studies.

In summary, while tumors and stomach cancer are related, they are not synonymous. Diagnostic methods vary in their effectiveness, and symptoms can be misleading. If you have concerns about your health or specific symptoms, it is crucial to seek medical advice from a healthcare professional who can provide personalized guidance based on a thorough evaluation. Regular check-ups and open communication with your doctor are key to managing any potential health issues effectively.

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