Stage IV breast cancer in the era of targeted therapy: does surgery of the primary tumor matter?

Cancer
Heather B NeumanTari A King

Abstract

Multiple studies have suggested that resection of the primary tumor improves survival in patients with stage IV breast cancer, yet in the era of targeted therapy, the relation between surgery and tumor molecular subtype is unknown. The objective of the current study was to identify subsets of patients who may benefit from primary tumor treatment and assess the frequency of local disease progression. Patients presenting with stage IV breast cancer and intact primary tumors (n = 186) were identified from a prospectively maintained clinical database (2000-2004) and clinical data were abstracted (grading determined according to the American Joint Committee on Cancer staging system). Surgery was performed in 69 (37%) patients: 34 (49%) patients with unknown metastatic disease at the time of surgery, 15 (22%) patients for local control, 14 (20%) patients for palliation, and in 6 (9%) patients to obtain tissue. Surgical patients were more likely to be HER-2/neu negative (P = .001), and to have smaller tumors (P = .05) and solitary metastasis (P <.001). Local therapy included axillary lymph node clearance in 33 (48%) patients and postoperative radiotherapy in 9 (13%) patients. The median survival was 35 months. Cox regression analysis ...Continue Reading

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