Isolated Intracranial Myeloid Sarcoma at Age 6 Months with Metastases

Excerpt

Myeloid sarcoma (MS) is a neoplasm formed by the infiltration of protogranulocytes or immature myeloid cells into organs and tissues other than bone marrow [1]. It can be associated with acute myeloid leukemia (AML) or chronic myeloid leukemia (CML) and other myeloproliferative disorders at the same time or before or after [2]. Isolated MS is defined as the disease without evidence of AML in bone marrow biopsy and failure to develop into AML within 30 days after the diagnosis of MS, which has an incidence of approximately 2 out of 1 million adults and 0.7 out of 1 million children; however, in infants it is even rarer [3, 4]. An MS can invade any anatomical site [1], the occurrence of MS in the central nervous system (CNS) is rare [5] and isolated primary intracranial MS should be carefully considered. This article presents a unique case of isolated intracranial MS at in a 6‑month-old patient with extensive brain metastases to highlight the unusual clinical and imaging presentation of this entity. …