欧博allbetWhat are the possible causes of a hard lum
What are the possible causes of a hard lump on the anus, and should it be biopsied?

Reviewed by Garrett Kneese, MD, MPH
Family Medicine
A hard lump on the anus can be caused by conditions ranging from benign growths to premalignant or malignant lesions, and if it appears suspicious, a biopsy is often recommended to determine its nature.
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A hard lump near the anus might be a sign of different issues. Some lumps are benign, meaning they are not dangerous. However, certain causes can include premalignant changes or even cancers like squamous cell carcinoma of the anal margin. These lumps may be hard because of changes in the skin or underlying tissues. Doctors pay close attention to lumps that seem unusual, are growing, or have irregular features since they can be a sign of a serious condition. A biopsy is a process where a small piece of tissue is removed from the lump and examined under a microscope. This test helps the doctor decide if the lump is benign or if it might be a premalignant or malignant lesion. If you notice a hard lump or any changes around the anus, it is important to have it evaluated by a healthcare professional. They can decide if a biopsy or other tests are needed to guide the best treatment and ensure your health is protected.
(References)
Sahai A, Kodner IJ. Premalignant neoplasms and squamous cell carcinoma of the anal margin. Clin Colon Rectal Surg. 2006 May;19(2):88-93. doi: 10.1055/s-2006-942349. PMID: 20011315; PMCID: PMC2780101.
Leonard D, Beddy D, Dozois EJ. Neoplasms of anal canal and perianal skin. Clin Colon Rectal Surg. 2011 Mar;24(1):54-63. doi: 10.1055/s-0031-1272824. PMID: 22379406; PMCID: PMC3140334.
Abbass MA, Valente MA. Premalignant and Malignant Perianal Lesions. Clin Colon Rectal Surg. 2019 Sep;32(5):386-393. doi: 10.1055/s-0039-1687835. Epub 2019 Aug 22. PMID: 31507349; PMCID: PMC6731115.