Movable Right Abdominal Mass: Causes and Concerns - Surgery

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Right abdominal mass?


Hello doctor, two months ago I felt a movable hard lump in the middle of my right abdomen (it feels somewhat elongated).
However, when I lie down and try to touch my abdomen, I cannot feel that lump.
Since I am currently abroad, what could be the possible reasons for this? Thank you! Also, my bowel movements are currently elongated but have an irregular surface.
Occasionally, I experience diarrhea, which usually improves after three days.

W, 20~29 year old female. Ask Date: 2020/09/22

Dr. Xu Kaixi reply Surgery


It can be palpated on the body surface, and the location is likely within the subcutaneous soft tissue layer, which may be fat, fibrous tissue, or a subcutaneous cyst.
Its correlation with the gastrointestinal tract in the abdominal cavity is relatively low.
It is recommended to visit a hospital for further examination and confirmation.

Reply Date: 2020/09/22

More Info


When it comes to the presence of a movable mass in the right abdominal area, there are several potential causes that need to be considered. The fact that you can feel a hard, movable mass suggests that it may not be a solid tumor, as solid masses are typically fixed in place. Instead, it could be related to various gastrointestinal or musculoskeletal issues.

One possibility is that the mass could be a loop of intestine that is palpable due to gas or stool accumulation. This is particularly plausible given your description of your bowel movements being long and irregular, with occasional diarrhea. Conditions such as irritable bowel syndrome (IBS) or functional gastrointestinal disorders can lead to changes in bowel habits and may cause the intestines to become distended or to form gas-filled loops that can be felt through the abdominal wall.

Another consideration is the presence of a hernia. A hernia occurs when an organ or tissue pushes through a weak spot in the abdominal muscles. If the mass is reducible (meaning it can be pushed back into the abdomen), it may indicate an inguinal or umbilical hernia. However, hernias typically present with pain or discomfort, especially when lifting or straining.

Additionally, the mass could be related to lymph nodes or other soft tissue structures that may become enlarged due to infection or inflammation. Infections in the abdominal area, such as appendicitis or diverticulitis, can also lead to localized swelling or masses. However, these conditions are usually accompanied by other symptoms such as fever, nausea, or significant abdominal pain.

Given that you mentioned the mass is not palpable when lying down, this could suggest that it is not a fixed structure but rather something that changes position based on your body posture. This characteristic is often seen in conditions related to the intestines or in cases of fluid accumulation, such as ascites, although ascites typically presents as a more diffuse swelling rather than a localized mass.

Your bowel movement pattern, described as long and irregular with occasional diarrhea, could indicate a functional gastrointestinal disorder, which may also contribute to the sensation of a mass. Stress and anxiety can exacerbate gastrointestinal symptoms, leading to changes in bowel habits and discomfort.

In terms of next steps, it is crucial to consult with a healthcare provider who can perform a physical examination and possibly imaging studies, such as an ultrasound or CT scan, to better understand the nature of the mass. These tests can help differentiate between various potential causes, including gastrointestinal issues, hernias, or other abdominal pathologies.

In the meantime, keeping a detailed record of your symptoms, including any changes in bowel habits, pain levels, and any other associated symptoms, can provide valuable information for your healthcare provider. If you experience any worsening symptoms, such as increased pain, fever, or changes in bowel habits, it is essential to seek medical attention promptly.

In summary, while the presence of a movable mass in the right abdomen can be concerning, it is essential to approach the situation with a thorough evaluation to determine the underlying cause. Conditions such as intestinal loops, hernias, or lymphadenopathy are all possibilities, and a healthcare professional can guide you through the necessary diagnostic steps to reach a conclusion.

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