Smoldering Systemic Mastocytosis with an Associated Myeloid Neoplasm

**Semantic type:** Neoplastic Process

**Definition:** Smoldering systemic mastocytosis associated with the presence of a clonal non-mast cell myeloid neoplasm (e.g., myelodysplastic syndrome, myeloproliferative neoplasm, and acute myeloid leukemia).

**Synonyms:** - Smoldering Systemic Mastocytosis with an Associated Hematologic Neoplasm