Published on: 4/7/2025
A lump near the belly button can sometimes be a sign of cancer, such as a Sister Mary Joseph nodule, but it is more often caused by benign conditions. It’s important to have any new or unusual lump evaluated by a doctor.
A lump near the belly button can have a variety of causes, and while in rare cases it may indicate cancer, most often it is due to a benign condition. One example of a cancer-related nodule is known as a Sister Mary Joseph nodule. This type of nodule is a sign of metastasis, meaning that cancer from another part of the body (often from the stomach, colon, or reproductive organs) has spread to the umbilical region. However, there are many non-cancerous reasons for a lump in that area. For instance, hernias are common and can cause a bulge near the belly button when part of an internal organ pushes through a weak spot in the abdominal wall. Other benign causes include cysts or small fatty tumors known as lipomas. Because the cause and significance of the lump can vary, it’s important to seek medical advice for a proper evaluation. A healthcare provider may perform a physical exam and imaging tests like an ultrasound or CT scan to determine its nature and decide on the appropriate treatment or further investigation if needed.
(References)
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Dar IH, Kamili MA, Dar SH, Kuchaai FA. Sister Mary Joseph nodule-A case report with review of literature. J Res Med Sci. 2009 Nov;14(6):385-7. PMID: 21772912; PMCID: PMC3129082.
Psarras K, Symeonidis N, Baltatzis M, Notopoulos A, Nikolaidou C. Umbilical metastasis as primary manifestation of cancer: a small series and review of the literature. J Clin Diagn Res. 2014 Oct;8(10):ND17-9. doi: 10.7860/JCDR/2014/9690.4997. Epub 2014 Oct 20. PMID: 25478400; PMCID: PMC4253218.
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