The outcome of postoperative radiation therapy following plastic surgical resection of recurrent ear keloid: a single institution experience

Journal of the Egyptian National Cancer Institute

Table 3 Recurrence free rateVariable (total no of cases; n=55)

	2y-RFR ± SD	P value
All patients	88 ± 5%
Group received 8Gy SS^a	81 ± 10%
Group received 13Gy SS^a	95 ± 5%
Group received 10-18Gy Fractionated	83 ± 11%	0.44
EQD2
≤ 20 Gy	83 ± 8%
> 20 Gy	92 ± 5%	0.37
Size
Keloid ≤ 2 cm	97 ± 3%
Keloid > 2 cm	74 ± 10%	0.02
Type of radiation
Orthovoltage	92 ± 4%
Electron beam	72 ± 14%	0.09
Size and dose effect
Keloid ≤ 2 cm
Group received 8 Gy SS	91 ± 9%
Group received 13 Gy SS	100 ± 0%	0.3
Keloid > 2 cm
Group received 8 Gy/1fx	56 ± 24%
Group received 13 Gy/1fx	88 ± 12%	0.05
Mean follow up period in months (range) (8–72)	35 ± 16
Mean time to recurrence in months (range) (5–65)	26 ± 14

^aSS = single shot. Comparing patients of 8Gy SS and patients of 13Gy SS separately is insignificant also with p value 0.2