Reviewed By:
Robin Schoenthaler, MD (Oncology)
Board certified radiation oncologist with over 30 years experience treating cancer patients. Senior physician advisor for expert medical options in adult oncology. Published award-winning essayist on medical and health issues and more.
Yukiko Ueda, MD (Dermatology)
Dr. Ueda graduated from the Niigata University School of Medicine and trained at the University of Tokyo Medical School. She is currently a clinical assistant professor at the Department of Dermatology, Jichi Medical University, and holds several posts in the dermatology departments at Kyoto Prefectural University of Medicine, Komagome Hospital, University of Tokyo, and the Medical Center of Japan Red Cross Society.
Content updated on Mar 31, 2024
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There is a lump
Skin has moles or spots of different colors
Lumps under skin
Black, blue, or brown spots on the skin or elsewhere
Cysts under skin
Discolored macules or moles on skin/mucus membranes
There is a nodule in the groin
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This is an extremely rare skin cancer. It grows slowly and seldom spreads beyond the skin, but it may recur even after removal. It originates from the connective tissue of the skin's middle layer. The exact cause remains unknown, but skin injury could be a risk factor.
Your doctor may ask these questions to check for this disease:
Treatment options include surgery to remove the tumor, radiation therapy, or targeted therapy if the cancer has certain characteristics.
Allen A, Ahn C, Sangüeza OP. Dermatofibrosarcoma Protuberans. Dermatol Clin. 2019 Oct;37(4):483-488. doi: 10.1016/j.det.2019.05.006. PMID: 31466588.
https://www.sciencedirect.com/science/article/abs/pii/S0733863519300488?via%3DihubThway K, Noujaim J, Jones RL, Fisher C. Dermatofibrosarcoma protuberans: pathology, genetics, and potential therapeutic strategies. Ann Diagn Pathol. 2016 Dec;25:64-71. doi: 10.1016/j.anndiagpath.2016.09.013. Epub 2016 Sep 27. PMID: 27806849.
https://www.sciencedirect.com/science/article/abs/pii/S1092913416302647?via%3DihubMujtaba B, Wang F, Taher A, Aslam R, Madewell JE, Spear R, Nassar S. Dermatofibrosarcoma Protuberans: Pathological and Imaging Review. Curr Probl Diagn Radiol. 2021 Mar-Apr;50(2):236-240. doi: 10.1067/j.cpradiol.2020.05.011. Epub 2020 Jun 1. PMID: 32620358.
https://www.sciencedirect.com/science/article/abs/pii/S0363018820301146?via%3DihubBadhey AK, Tikhtman R, Tang AL. Management of dermatofibrosarcoma protuberans. Curr Opin Otolaryngol Head Neck Surg. 2021 Aug 1;29(4):278-282. doi: 10.1097/MOO.0000000000000721. PMID: 33993132.
https://journals.lww.com/co-otolaryngology/Abstract/2021/08000/Management_of_dermatofibrosarcoma_protuberans.10.aspxMale, 30s
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I was actually very impressed with the results it provided because, although I didn’t mention it during the questionnaire because I thought it was unrelated, it suggested I may have something I’ve actually been diagnosed with in the past.
(Sep 25, 2024)
Reviewed By:
Robin Schoenthaler, MD (Oncology)
Board certified radiation oncologist with over 30 years experience treating cancer patients. Senior physician advisor for expert medical options in adult oncology. Published award-winning essayist on medical and health issues and more.
Yukiko Ueda, MD (Dermatology)
Dr. Ueda graduated from the Niigata University School of Medicine and trained at the University of Tokyo Medical School. She is currently a clinical assistant professor at the Department of Dermatology, Jichi Medical University, and holds several posts in the dermatology departments at Kyoto Prefectural University of Medicine, Komagome Hospital, University of Tokyo, and the Medical Center of Japan Red Cross Society.
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