• Rune Gärtner, Maj-Britt Jensen, Jeanette Nielsen, Marianne Ewertz, Niels Kroman, and Henrik Kehlet.
• Department of Breast Surgery, Rigshospitalet 2101, University of Copenhagen, Blegdamsvej 9, DK-2100 Copenhagen, Denmark. runegartner@gmail.com
• JAMA. 2009 Nov 11;302(18):1985-92.

ContextPersistent pain and sensory disturbances following surgical treatment for breast cancer is a significant clinical problem. The pathogenic mechanisms are complex and may be related to patient characteristics, surgical technique, and adjuvant therapy.ObjectiveTo examine prevalence of and factors associated with persistent pain after surgical treatment for breast cancer.Design, Setting, And PatientsA nationwide cross-sectional questionnaire study of 3754 women aged 18 to 70 years who received surgery and adjuvant therapy (if indicated) for primary breast cancer in Denmark between January 1, 2005, and December 31, 2006. A study questionnaire was sent to the women between January and April 2008.Main Outcome MeasuresPrevalence, location, and severity of persistent pain and sensory disturbances in 12 well-defined treatment groups assessed an average of 26 months after surgery, and adjusted odds ratio (OR) of reported pain and sensory disturbances with respect to age, surgical technique, chemotherapy, and radiotherapy.ResultsBy June 2008, 3253 of 3754 eligible women (87%) returned the questionnaire. A total of 1543 patients (47%) reported pain, of whom 201 (13%) had severe pain, 595 (39%) had moderate pain, and 733 (48%) had light pain. Factors associated with chronic pain included young age (18-39 years: OR, 3.62; 95% confidence interval [CI], 2.25-5.82; P < .001) and adjuvant radiotherapy (OR, 1.50; 95% CI, 1.08-2.07; P = .03), but not chemotherapy (OR, 1.01; 95% CI, 0.85-1.21; P = .91). Axillary lymph node dissection (ALND) was associated with increased likelihood of pain (OR, 1.77; 95% CI, 1.43-2.19; P < .001) compared with sentinel lymph node dissection. Risk of sensory disturbances was associated with young age (18-39 years: OR, 5.00; 95% CI, 2.87-8.69; P < .001) and ALND (OR, 4.97; 95% CI, 3.92-6.30; P < .001). Pain complaints from other parts of the body were associated with increased risk of pain in the surgical area (P < .001). A total of 306 patients (20%) with pain had contacted a physician within the prior 3 months for pain complaints in the surgical area.ConclusionTwo to 3 years after breast cancer treatment, persistent pain and sensory disturbances remain clinically significant problems among Danish women who received surgery in 2005 and 2006.

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