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Table 1 Clinical Data of non-ossifying fibromas including age at detection, size in length, expansion in the transversal and sagittal diameter

From: Non-ossifying fibroma: natural history with an emphasis on a stage-related growth, fracture risk and the need for follow-up

  Stage Aa Stage Ba Stage Ca Stage Da
Number of patients 19 53 17 14
Average age (years) 13 ± 3.7 15 ± 5.7 20.4 ± 7.7 40.1 ± 12.4
Average length (mm) 21 ± 11 38 ± 16 47 ± 29 34.6 ± 15
Average transversal diameter expansion (%) 20 ± 9 46 ± 22 39 ± 12 30 ± 10
Average sagittal diameter expansion (%) 39 ± 14 56 ± 25 39 ± 12 32 ± 10
  1. aStage according to Ritschl [5]. Data provide average value and standard deviation