Abstract
A male patient, 72 years of age and white, complained of bubbles in the mouth for 10 days. Past medical history: Received renal transplant (2001), diabetes mellitus, coronary artery bypass graft, and radiation therapy for basal cell carcinoma in the head region (2014). Extraoral examination showed basal cell carcinomas in the right and left ears and blood lesions in the arms. At intraoral examination, we observed hemorrhagic blister and ulcerated lesion with superficial shallow edges, preceded by blister both in the lower lip mucosa, blood injury, slightly high edges, blackish coloration, and located in the mucosa of the cheek. Differential diagnosis: Angina bullosa × thrombotic thrombocytopenic purpura. Management: Cytologic examination of oral mucous membrane lesions, diagnosed with acute inflammatory process with presence of squamous cells of regenerative aspect. Complete blood count with platelet count of 66,000/mm3 was requested. Therapy: Mouthwash with chlorhexidine and hematologist evaluation.
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