A 28-year-old female asked:
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i have a black blood bubble on the back of my mouth. what could cause that?

2 doctor answers
Dr. Rawhi Omar
44 years experience Pathology
Hemangioma?: If it has been there for a long time it maybe a hemangioma (benign tumor of blood-filled vessels); it maybe a hematoma (leaked blood collection) if it appeared after a recent trauma. If it bothers you get it examined by a dentist or DDS
Answered on Sep 16, 2017
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Dr. Milton Alvis, jr
41 years experience Preventive Medicine
Angina bullosa often: called blood blisters, medical term hematoma, due to bleeding from capillaries which remains trapped beneath surface mucosa due to either local capillary issue or injury resulting in blister which then fills with blood from local capillaries. From description hemangioma might also be possible, yet unlikely, would not be black.
Answered on Apr 12, 2018
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