Table 1.

Recurrent metastatic breast cancer term to concept mappings

Custom word class	Short description	Example terms
DRECUR	Distant recurrence	Recurrent metastatic tnbc, distant relapse, distant recurrences, distant metastatic disease involving
LRECUR	Local or regional recurrence	Regional recurrence, nodal recurrence, loco-regional failure, locally recur, in-breast recurrence, local recur
MBC	Metastatic breast cancer	Widespread metastatic breast cancer, widely metastatic triple, metastatic breast carcinoma, metastatic tnbc
MBCLOW	Metastatic breast cancer (low confidence)	Metastica, metastesesa, metastatisa, metastatic lobular carcinoma, metastatic lesion, metastatic lesions, metastatic foci, mbc, met brca
METSBONE	Metastatic disease to the bone	Bone mets, bone metastasis, bone metastesesa, mets to spine, boney mets, diffuse skeletal mets, mets to spine
METSBRAIN	Metastatic disease to the brain	Metastatic disease involving the brain, brain mets, mets to brain, brain metastasis, brain metastases
METSLIVER	Metastatic disease to the liver	Liver mets, liver metastasis, liver metastases, hepatic mets, hepatic metastasis, hepatic metastases
METSLUNG	Metastatic disease to the lung	Mets to lung, pulm mets, lung mets, mbc pulm, lung metastases
METSNOS	Metastatic disease (distant organ not specified)	Widespread metastatic disease, stage4, newly diagnosed metastatic, stage iv
RECUR	Recurrence	Recur, rapid recurrence, multiple recurrences, recurrent disease, reoccurrence, reoccurring
DIED	Death	Passed away, expired on, deceased

^aThese were original spellings from the clinical notes and the misspellings are left intentionally.