Left Lower Abdominal Mass: Possible Causes and Concerns - Gastroenterology and Hepatology

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Left lower abdominal mass?


Hello Doctor: I have felt a tubular mass in my left lower abdomen near the pelvis (about 6 centimeters long, approximately the width of my thumb; sometimes it is very noticeable, other times it is less so).
I have already consulted a gynecologist, but the ultrasound showed no issues.
I also had an abdominal ultrasound at a clinic, and the doctor said he did not see anything significant; he suspected it might be a hernia, but I can still feel it when lying down.
My bowel movements are generally normal, with no blood in the stool, and I can pass large stools; sometimes I experience constipation, but it is manageable now.
The mass can still be felt after a bowel movement, and I have been dealing with bloating for a long time.
I have been able to feel this mass for over a month.
My body type is normal, with a BMI of around 20.
I would like to ask the doctor if what I am feeling could be a spastic intestine? If there were a bowel tumor, would it be impossible to have normal bowel movements? And if it can be felt, would it be detectable on ultrasound? I have read a lot of articles and feel that my symptoms are quite atypical.
Thank you for your clarification.

Bālè, 20~29 year old female. Ask Date: 2017/01/18

Dr. Chen Qifeng reply Gastroenterology and Hepatology


If the physician cannot palpate the mass and it is not visible on ultrasound, it can almost be confirmed that the mass does not exist.
If it is a hernia, it would be a more superficial protrusion that the physician should be able to feel.
If it is an enlarged intestine, it may be intermittently palpable.
As for intestinal tumors, they are generally not palpable; when they are palpable, they are usually larger, and abdominal ultrasound may also be able to detect them.

Reply Date: 2017/01/18

More Info


Hello, thank you for your detailed description of your symptoms. It sounds like you are experiencing a complex situation with the left lower abdominal mass and associated discomfort. Based on the information you've provided, let's explore some potential causes and considerations regarding your condition.

Firstly, the presence of a palpable mass in the left lower abdomen can arise from various sources. Given that you've already undergone ultrasound examinations which did not reveal any significant abnormalities, we can consider a few possibilities:
1. Muscle or Fascia Issues: Sometimes, what feels like a mass could be related to the abdominal muscles or fascia. Muscle spasms or tightness can create a sensation of a lump or mass, especially if you have been experiencing abdominal discomfort or bloating. This could also explain why the mass is sometimes more pronounced than at other times.

2. Hernias: You mentioned that a doctor suspected a hernia. Hernias can sometimes be difficult to detect on imaging, especially if they are small or reducible. A hernia occurs when an organ or tissue protrudes through a weak spot in the abdominal wall. If you can feel the mass when standing or sitting but not when lying down, this could indicate a hernia.

3. Bowel Issues: Given your history of bloating and occasional constipation, it is possible that the mass could be related to bowel distension or an accumulation of stool. Even if you are able to pass normal stools, there could be areas of the bowel that are not functioning optimally, leading to localized swelling or a feeling of fullness.

4. Lymph Nodes: Enlarged lymph nodes can sometimes be felt as masses in the abdomen. While they are typically associated with infections or malignancies, benign causes such as inflammation can also lead to lymphadenopathy.

5. Ovarian Issues: Although you have seen a gynecologist and had ultrasounds, it’s worth noting that some ovarian cysts or masses can be difficult to detect, especially if they are small or in a location that is not easily visualized. If you are female, it may be beneficial to follow up with your gynecologist for further evaluation.

Regarding your question about whether a bowel tumor could be felt while still having normal bowel movements, it is indeed possible. Some tumors can be located in such a way that they do not obstruct the bowel, allowing for normal passage of stool. However, if a tumor were present, it would typically be visible on imaging studies, especially if it is large enough to be palpable.

In terms of your concerns about whether the mass could be "cramping intestines," it is plausible that muscle spasms or bowel motility issues could create a sensation of a mass. However, this would not typically present as a discrete, palpable mass.

Given the complexity of your symptoms and the duration of your discomfort, I recommend seeking further evaluation. A referral to a gastroenterologist may be beneficial for a more comprehensive assessment, which could include advanced imaging studies such as a CT scan or MRI, or possibly a colonoscopy if indicated. These tests can provide a clearer picture of what is happening in your abdomen and help rule out any serious conditions.

In summary, while there are several potential explanations for the mass you are feeling, further investigation is warranted to ensure that any underlying issues are identified and appropriately managed. Please continue to monitor your symptoms and seek medical advice if there are any changes or worsening of your condition. Your health and well-being are paramount, and it’s important to get to the bottom of this issue. Thank you for sharing your concerns, and I hope this information helps guide you toward the next steps in your care.

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