Acute; Oral Manifestations; Oral Hemorrhage; Delayed Diagnosis 1 Article 1 Leukemia 1 Promyelocytic adult 1 advanced cancer 1 anemia 1 blast cell 1 blood cell count 1 case report 1 clinical article 1 ecchymosis 1 epistaxis 1 fatality 1 fever 1 human 1 leukocytosis 1 lung alveolus 1 lung hemorrhage 1 male 1 middle aged 1 mouth disease 1 oral bleeding 1 pallor 1 promyelocytic leukemia 1 thrombocytopenia 1