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A gumma is a soft, tumor-like growth of the tissues (granuloma) that occurs in people with syphilis.
Causes
A gumma is caused by the bacteria that cause syphilis. It appears during late-stage tertiary syphilis. It most often contains a mass of dead and swollen fiber-like tissue. It is most often seen in the liver. It also can occur in the:
- Bone
- Brain
- Heart
- Skin
- Testis
- Eyes
Similar-looking sores sometimes occur with tuberculosis.
References
Centers for Disease Control and Prevention website. Sexually transmitted infections treatment guidelines, 2021. www.cdc.gov/std/treatment-guidelines/default.htm. Updated June 13, 2023. Accessed September 27, 2023.
Dinulos JGH. Sexually transmitted bacterial infections. In: Dinulos JGH, ed. Habif's Clinical Dermatology. 7th ed. Philadelphia, PA: Elsevier; 2021:chap 10.
Dionne JA, Ghanem KG. Syphilis and nonsyphilitic treponematoses. In: Goldman L, Cooney KA, eds. Goldman-Cecil Medicine. 27th ed. Philadelphia, PA: Elsevier; 2024:chap 295.
Radolf JD, Tramont EC, Salazar JC. Syphilis (Treponema pallidum). In: Bennett JE, Dolin R, Blaser MJ, eds. Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases. 9th ed. Philadelphia, PA: Elsevier; 2020:chap 237.
Stary Georg, Stary A. Sexually transmitted infections. In: Bolognia JL, Schaffer JV, Cerroni L, eds. Dermatology. 4th ed. Philadelphia, PA: Elsevier; 2018:chap 82.
Review Date 7/12/2023
Updated by: John D. Jacobson, MD, Professor Emeritus, Department of Obstetrics and Gynecology, Loma Linda University School of Medicine, Loma Linda, CA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.