Table 1.

Fifteen most frequent concepts extracted from the conclusion sections of radiology reports

UMLS Concept Unique Identifier (CUI)	Term
C0027651, C0006118	Brain neoplasms
C0728940	Excision
C0013604	Edema
C0010280	Craniotomy
C1510420, C0333343, C1515091	Surgical resection cavity
C1627358	Contrast enhancement
C0017636	Glioblastoma
C0229985	Surgical margins
C0027540	Necrosis
C0543478	Residual tumor
C0019080	Hemorrhage
C0020255	Hydrocephalus
C0576481	Midline shift
C0020564	Hypertrophy
C0178874F	Tumor progression

Given the context of brain cancer imaging, some concepts were combined and presented to the user in synonymous fashion.

UMLS, Unified Medical Language System.