Table 1.
Word sense ambiguity failures: inconsistent mappings of stage by MetaMap.
| Sample sentence | Mapped term | UMLS concept | Concept unique identifiers | UMLS semantic type |
| “My father was diagnosed with stage 2b pancreatic cancer” | stage 2b | Stage 2B | C0441769 | Classification |
| “I'm stage 4 SLL and stage 2 CLL” | stage | Tumor stage | C1300072 | Clinical attribute |
| “I was dx last year at age 46 with Stage 1” | Stage 1 | Stage level 1 | C0441766 | Intellectual product |
| “Almost seven years ago I was diagnosed with stage 1 breast cancer at age 36 ½” | Stage breast cancer | malignant neoplasm of breast staging | C2216702 | Neoplastic process |
| “My friend was just diagnosed with Stage IV cancer” | stage | Stage | C1306673 | Qualitative concept |
| “My mom was diagnosed 11/07 with stage IV inoperable EC” | stage | Phase | C0205390 | Temporal concept |