Our Services
Medical Information
Helpful Resources
Published on: 9/17/2026
A lump on the right side of the abdomen can range from a harmless lipoma or swollen lymph node to a hernia, an inflamed appendix or gallbladder, or a growth involving the liver, kidney, or bowel, so timing matters and several factors should be weighed before you wait it out. Seek emergency care right away if the lump is painful, hard, red, or rapidly growing, or if it comes with fever, vomiting, severe or worsening pain, or a bulge that cannot be pushed back in, since these can signal a trapped hernia, abscess, or obstruction. A painless, soft, slow-growing lump usually warrants a prompt but non-emergency visit, ideally within days to a couple of weeks, and any lump paired with unexplained weight loss, night sweats, or changes in bowel habits should be evaluated sooner. See below for the full breakdown of causes, red-flag symptoms, and what to expect during an exam, as there are important details that can change how urgently you should be seen.
Because the same lump can mean very different things depending on your age, location of pain, and accompanying symptoms, a few minutes of structured questions can help you sort urgent from routine. Take a free, instant, online symptom check to see which conditions best match your situation and what your most reasonable next step is.
Last reviewed for medical accuracy: 09/17/2026
Noticing a new lump in your abdomen right side can be unsettling. Most of the time, these bumps turn out to be harmless. Still, it’s important to understand what might cause a lump and when to seek medical attention.
A painless or tender bump under the skin on your right side may come from:
Hernias
Occur when an internal organ or fatty tissue pushes through a weak spot in your abdominal muscle wall. You might feel it more when you cough, stand, or strain.
Lipomas
Benign (noncancerous) fatty tumors just beneath the skin. They’re usually soft, movable, and painless.
Enlarged Lymph Nodes
When your body fights infection, lymph nodes can swell. These are usually tender and may come with other flu-like symptoms.
Muscle Knots or Strains
Overexertion, heavy lifting or sudden twisting can cause localized swelling or tightness in the abdominal wall.
Abscesses or Cysts
Infected pockets of fluid or pus can form under the skin or within organs. They’re often painful, red, or warm to the touch.
Organ-Related Masses
• Kidney issues (e.g., hydronephrosis)
• Gallbladder problems, like gallstones or cholecystitis
• Liver enlargement (hepatomegaly)
• Right-sided colon issues, such as diverticulitis or tumors
• In women: ovarian cysts or enlarged fallopian tubes
Most lumps are benign, but certain warning signs mean you should get checked right away:
If you have any of these symptoms along with a lump in abdomen right side, don’t wait. Seek medical care promptly.
Consider heading to the emergency department or calling your doctor immediately if you experience:
These could signal a serious condition requiring quick treatment.
If you’re unsure how urgent your lump feels, you might consider doing a free, online symptom check, using the doctor approved Ubie Symptom Checker. This tool can help you sort through your symptoms and suggest possible causes, but it’s not a substitute for professional medical advice.
When you see your healthcare provider, they will:
Take a detailed history
• When did you first notice the lump?
• Any recent trauma or heavy lifting?
• Other symptoms like fever or digestive changes?
Perform a physical exam
• Palpation to assess size, texture, tenderness, and mobility
• Check for hernias by having you cough or strain
Order imaging tests if needed
• Ultrasound to see fluid versus solid mass
• CT scan or MRI for a clearer picture of internal organs
Recommend blood tests
• Check for infection markers (white blood cell count)
• Liver and kidney function tests
Discuss next steps
• Watchful waiting for benign-appearing lumps
• Referral to a specialist (e.g., general surgeon, gastroenterologist, gynecologist)
• Biopsy if there’s a concern for cancer
Treatment depends on the cause:
Your doctor will tailor the plan based on your overall health, test results, and personal preferences.
If your lump isn’t an emergency but still bothers you:
Finding a lump can trigger worry. Remember:
Even if your initial tests are normal, follow up if:
Regular monitoring can catch any changes early.
A lump in abdomen right side can range from harmless to serious. Pay attention to:
If in doubt, talk to a healthcare professional. And remember, using a free, online symptom check, using the doctor approved Ubie Symptom Checker can help guide you on your next steps.
Speak to a doctor about anything that could be life-threatening or serious. Early action is always your best defense.
(References)
* SHAFFER JO. Massive and recurrent hernias; use of dermal grafts in carrying out repair. Calif Med. 1956 Jul;85(1):10-4. PMID: 13342997; PMCID: PMC1532158.
* Carilli S, Alper A, Emre A. Inguinal cord lipomas. Hernia. 2004 Aug;8(3):252-4. doi: 10.1007/s10029-004-0231-8. Epub 2004 Apr 23. PMID: 15105999.
* Smolilo D, Eteuati J, Hollington P. Acquired interstitial hernia. ANZ J Surg. 2017 Apr;87(4):305-306. doi: 10.1111/ans.12863. Epub 2014 Oct 7. PMID: 25287888.
* Thomas AK, Thomas RL, Thomas B. Canal of Nuck Abnormalities. J Ultrasound Med. 2020 Feb;39(2):385-395. doi: 10.1002/jum.15103. Epub 2019 Aug 4. PMID: 31378959.
* Arango-Díaz A, Trujillo-Ariza MV, Liñares-Paz MM, Baleato-González S, García-Palacios M. Pediatric groin lesions: imaging findings. Radiologia (Engl Ed). 2020 May-Jun;62(3):188-197. doi: 10.1016/j.rx.2020.01.005. Epub 2020 Mar 9. PMID: 32165019.
* Finch D, Mehmood S, Varghese J. Abdominal wall reconstruction using biosynthetic absorbable mesh in high-risk complex ventral hernia. Swiss Med Wkly. 2021 Mar 1;151:w20449. doi: 10.4414/smw.2021.20449. Epub 2021 Mar 1. PMID: 33705564.
* Jensen TK, Gögenur I, Tolstrup MB. High rate of incisional hernia observed after mass closure of burst abdomen. Hernia. 2022 Oct;26(5):1267-1274. doi: 10.1007/s10029-021-02523-4. Epub 2021 Oct 21. PMID: 34674087.
* Ando Y, Tsuka T, Okamoto Y. Lateral abdominal hernia associated with thin abdominal musculature in a calf. J Vet Med Sci. 2022 Apr 13;84(4):533-537. doi: 10.1292/jvms.21-0653. Epub 2022 Feb 24. PMID: 35197414; PMCID: PMC9096036.
* Alasmar M, McKechnie I, Chaparala RPC. Emergency surgery for hiatus hernias: does technique affect outcomes? A single-centre experience. Updates Surg. 2023 Aug;75(5):1227-1233. doi: 10.1007/s13304-023-01482-y. Epub 2023 Mar 3. PMID: 36869223; PMCID: PMC10359210.
* Dias ERM, Rondini GZ, Amaral PHF, Macret JZ, Carvalho JPV, Pivetta LGA, Malheiros CA, Roll S. Systematic review and meta-analysis of the pre-operative application of botulinum toxin for ventral hernia repair. Hernia. 2023 Aug;27(4):807-818. doi: 10.1007/s10029-023-02816-w. Epub 2023 Jun 17. PMID: 37329437.
We would love to help them too.
For First Time Users
We provide a database of explanations from real doctors on a range of medical topics. Get started by exploring our library of questions and topics you want to learn more about.
Was this page helpful?
Purpose and positioning of servicesUbie Doctor's Note is a service for informational purposes. The provision of information by physicians, medical professionals, etc. is not a medical treatment. If medical treatment is required, please consult your doctor or medical institution. We strive to provide reliable and accurate information, but we do not guarantee the completeness of the content. If you find any errors in the information, please contact us.