Oral myeloid sarcoma as an uncommon manifestation of acute m
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Oral myeloid sarcoma (MS) is an extramedullary tumor that can occur in the setting of acute myeloid leukemia, either as the first sign of an underlying disease or later in the course of the disease.

Case 1 was an 82-year-old woman with an asymptomatic erythematous swelling on the maxillary gingiva and no history of hematologic malignancy. Case 2, a 65-year-old man, and case 3, a 58-year-old woman, each had a history of acute myeloid leukemia and a painful ulcer on the palatal mucosa and an asymptomatic ulcer on the lower lip mucosa, respectively.

Case 1 was treated with focal radiation then chemotherapy and achieved complete remission initially, but died of relapse 2 years after diagnosis. Case 2 received radiotherapy and immunotherapy and had a complete response. Case 3 received chemotherapy and achieved remission initially, but relapsed and is undergoing investigational targeted therapies.

Oral MS can manifest as gingival or mucosal swelling or ulceration and can indicate onset or relapse of associated hematologic malignancies, which often have a poor prognosis. Because patients with oral findings are likely to seek treatment from their dentists first, oral clinicians should maintain a broad differential diagnosis list when evaluating oral lesions, especially if the treatment prescribed for a more common diagnosis fails to resolve the lesion.

The Journal of the American Dental Association
Source: https://doi.org/10.1016/j.adaj.2021.01.017
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