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 Jan 19, 2024
Following the Medical Content Editorial Policy
Worried about your symptoms?
Choose one to start our AI Symptom Checker.
It will help us optimize further questions for you.
By starting the symptom checker, you agree to the Privacy Policy and Terms of Use
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
Not seeing your symptoms? No worries!
With an easy 3-min questionnaire , Ubie's AI-powered system will generate a free report on possible causes.
Questions are customized to your situation and symptoms, including the following personal information:
Biological Sex - helps us provide relevant suggestions for male vs. female conditions.
Age - adjusts our guidance based on any age-related health factors.
History - considers past illnesses, surgeries, family history, and lifestyle choices.
Your symptoms
Our AI
Your report
Your personal report will tell you
✔ When to see a doctor
✔︎ What causes your symptoms
✔︎ Treatment information etc.
See full list
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
I got more answers in one minute through your site than I did in three hours with Google.
(Sep 29, 2024)
Male, 20s
My experience was great. I was worried, but the symptom checker helped me narrow down what it might be. I feel a little relieved compared to when I first started, and it gives me a starting point for what my symptoms could mean.
(Sep 27, 2024)
Male, 50s
The questions asked and possible causes seemed spot on, putting me at ease for a next-step solution.
(Sep 26, 2024)
Female, 40s
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.
Our symptom checker AI is continuously refined with input from experienced physicians, empowering them to make more accurate diagnoses.
“World’s Best Digital
Health Companies”
Newsweek 2024
“Best With AI”
Google Play Best of 2023
“Best in Class”
Digital Health Awards 2023 (Quarterfinalist)
Ubie’s symptom checker demonstrated a Top-10 hit accuracy of 71.6%, surpassing the performance of several leading symptom checkers in the market, which averaged around 60% accuracy in similar assessments.
Link to full study:
https://www.medrxiv.org/content/10.1101/2024.08.29.24312810v1