Purpose: Patients with acute myeloid leukemia (AML) often present with fatigue and severe pancytopenia. We report the case of a 68-year-old woman with no significant medical history who presented with 1 year of progressively worsening bilateral temporomandibular joint (TMJ) pain. She was otherwise asymptomatic. A computed tomography scan revealed degenerative joint disease in both TMJs. Bilateral TMJ replacement was performed.
Materials And Methods: The excised TMJ tissue underwent formalin fixation and decalcification, and routine hematoxylin and eosin-stained sections were generated.
Results: Immunohistochemical stains showed a population of monotonous cells in the marrow space expressing CD33, CD43, and myeloperoxidase, confirming the diagnosis of myeloid neoplasm. Subsequent bone marrow biopsy with flow cytometry confirmed AML with myelodysplasia-related changes.
Conclusions: Adult patients with AML can rarely present with musculoskeletal complaints alone, which could delay the diagnosis. To our knowledge, this is the first report of AML with myelodysplasia-related changes presenting in a patient with TMJ degenerative joint disease that was otherwise asymptomatic.
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