Table 1 Inclusion and exclusion criteria

• 30–65 years of age

• BMI of 18.5–29.9 (normal to overweight range)

• Underwent NSM with PR or IMF incisions followed by PMRT.

• Completed RT (16–35 sessions, total dose 42.56–60 Gy)

• Documented preoperative and postoperative symmetry score

• Ages outside the specified range

• BMI outside the specified range

• Underwent alternative surgical techniques.

• Did not complete RT

• Incomplete medical records