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MR imaging T2 patterns of 37 primary tumor beds in 37 patients 6 weeks posttreatment, pretreatment and posttreatment details, and clinical outcome at the primary site

Posttreatment T2 Pattern (0–3)Pretreatment Primary TumorSize of Residual Masses (median in cm; range)Local FailuredLocal Controle
0: Complete resolution No focal massaAll tumors of expansile intermediate T2 signal without deep extension (size, 1.7–3.6 cm; stage, T4 = 0)0 (0.0–0.0)12
1: Scar tissue mass Flat-edged/retracted low T2 signal massbAll tumors of expansile intermediate T2 signal with deep extension (size, 2.0–5.1 cm; stage, T4 = 4)1.9 (0.7–2.5)014
2: Indeterminate mass Mass without features defined in pattern 1 or 3All tumors of expansile intermediate T2 signal with deep extension (size, 1.4–7.3 cm; stage, T4 = 7)2.0 (1.3–3.2)65
3: Residual cancer mass Focal expansile mass ≥ 1 cm in size of intermediate T2 signalcAll tumors of expansile intermediate T2 signal with deep extension (size, 2.9–7.3 cm; stage, T4 = 8)2.6 (2.0–5.4)90
  • a No abnormality or only expected symmetric changes.

  • b Without any other T2 abnormalities in the residual mass.

  • c Irrespective of other T2 signal abnormalities in the residual mass.

  • d Total = 16.

  • e Total = 21.