Hemorrhagic bulla on the lip: A diagnostic dilemma p. 124 Aravinda Konidena, Hena Shaw, Mansimran Kaur Uppal DOI:10.4103/ijohs.ijohs_17_18 Angina bullosa hemorrhagica (ABH) is a rare benign disorder characterized by the sudden onset of painless blood-filled blister in the oral cavity that rupture in 24–48 h. We recently encountered an interesting case of ABHon the lower lip of 68-year-old female patient referred back from the prosthodontic department following the procedure of impression making. This case will be presented along with a review of previous case summaries reporting four or more cases.

Hemorrhagic bulla on the lip: A diagnostic dilemma p. 124
Aravinda Konidena, Hena Shaw, Mansimran Kaur Uppal
DOI:10.4103/ijohs.ijohs_17_18  
Angina bullosa hemorrhagica (ABH) is a rare benign disorder characterized by the sudden onset of painless blood-filled blister in the oral cavity that rupture in 24–48 h. We recently encountered an interesting case of ABHon the lower lip of 68-year-old female patient referred back from the prosthodontic department following the procedure of impression making. This case will be presented along with a review of previous case summaries reporting four or more cases.
http://www.ijohsjournal.org/currentissue.asp?sabs=y