Necrotic intramuscular chloroma with infection: magnetic resonance imaging features

Abstract

We recently experienced the case of an intramuscular chloroma with infection in a 7-year-old boy diagnosed with acute myeloid leukemia. Conventional magnetic resonance imaging (MRI) showed that the lesion mimicked an abscess, but diffusion-weighted imaging showed no diffusion restriction. These results suggested that the interior cystic portion was serous. On histopathological findings, a chloroma was diagnosed on the wall of a mass. Culture of the interior fluid revealed that Klebsiella pneumoniae was present. MRI differentiation is difficult even with diffusion-weighted images.

Myeloid sarcoma presenting as fingertip necrosis with underlying suppurative tenosynovitis: A case report

“…However, it is also possible that malignant transformation took place during the inflammatory response's rapid cellular proliferation. Others have reported associations between MS and atypical infections, such as a Klebsiella‐containing cystic intramuscular mass in a 7‐year‐old 5 and a case of invasive aspergillus concurrent with a sinonasal MS in an elderly man 6 . According to a large population‐based study, individuals with a history of infectious or autoimmune disease may have a significantly increased risk of developing AML and myelodysplasia 7 .…”