Surgery to Remove Sentinel Lymph Nodes With or Without Removing Lymph Nodes in the Armpit in Treating Women With Breast Cancer

New York Oncology Hematology, P.C. - Albany Regional Cancer Center, Albany

CCOP - MainLine Health, Wynnewood

MBCCOP - Howard University Cancer Center, Washington D.C.

Franklin Square Hospital Center, Baltimore

Virginia Oncology Associates - Newport News, Newport News

Camcare Health, Charleston

CCOP - Upstate Carolina, Spartanburg

Halifax Medical Center, Daytona Beach

Baptist Regional Cancer Institute - Jacksonville, Jacksonville

University of Miami Sylvester Cancer Center, Miami

CCOP - Mount Sinai Medical Center, Miami Beach

Sarasota Memorial Hospital, Sarasota

MBCCOP - Gulf Coast, Mobile

CCOP - Columbus, Columbus

Akron City Hospital, Akron

Aultman Hospital Cancer Center at Aultman Health Foundation, Canton

Jewish Hospital of Cincinnati, Incorporated, Cincinnati

CCOP - Dayton, Kettering

CCOP - Northern Indiana CR Consortium, South Bend

CCOP - Michigan Cancer Research Consortium, Ann Arbor

Josephine Ford Cancer Center at Henry Ford Hospital, Detroit

Michigan State University, East Lansing

CCOP - Grand Rapids, Grand Rapids

Medical College of Wisconsin Cancer Center, Milwaukee

CCOP - Merit Care Hospital, Fargo

CCOP - Montana Cancer Consortium, Billings

MBCCOP-Cook County Hospital, Chicago

Creticos Cancer Center at Advocate Illinois Masonic Medical Center, Chicago

CCOP - Illinois Oncology Research Association, Peoria

CCOP - Kansas City, Kansas City

Methodist Hospital Cancer Center at Nebraska Methodist Hospital - Omaha, Omaha

Stanley S. Scott Cancer Center at Louisiana State University Medical Center - New Orleans, New Orleans

Tulane University Medical Center, New Orleans

University of Arkansas for Medical Sciences, Little Rock

Huntsman Cancer Institute, Salt Lake City

Utah Valley Regional Medical Center - Provo, Provo

Kaiser Permanente Medical Center/Kaiser Foundation Hospital - San Diego, San Diego

Loma Linda University Cancer Institute at Loma Linda University Medical Center, Loma Linda

Cancer Research Center of Hawaii, Honolulu

CCOP - Columbia River Oncology Program, Portland

Puget Sound Oncology Consortium, Seattle

City of Hope Comprehensive Cancer Center, Duarte

Sutter Breast Cancer Group, Sacramento

Stanford Cancer Center at Stanford University Medical Center, Stanford

Hartford Hospital, Hartford

Methodist Cancer Center at Methodist Hospital, Indianapolis

CCOP - Iowa Oncology Research Association, Des Moines

CCOP - Wichita, Wichita

Eastern Maine Medical Center, Bangor

Cancer Research Center at Boston Medical Center, Boston

University of Massachusetts Memorial Medical Center - University Campus, Worcester

CCOP - Kalamazoo, Kalamazoo

CCOP - Beaumont, Royal Oaks

Providence Cancer Institute at Providence Hospital, Southfield

Cancer Institute of New Jersey, New Brunswick

Newark Beth Israel Medical Center, Newark

CCOP - Southeast Cancer Control Consortium, Winston-Salem

Comprehensive Cancer Center at Wake Forest University, Winston-Salem

Charles M. Barrett Cancer Center at University Hospital, Cincinnati

Ireland Cancer Center, Cleveland

Geisinger Medical Center, Danville

Kimmel Cancer Center at Thomas Jefferson University - Philadelphia, Philadelphia

Allegheny General Hospital, Pittsburgh

Reading Hospital and Medical Center, Reading

University of Texas Health Science Center at San Antonio, San Antonio

Vermont Cancer Center at University of Vermont, Burlington

MBCCOP - Massey Cancer Center, Richmond

CCOP - Northwest, Tacoma

Saint John Regional Hospital, Saint John

Toronto Sunnybrook Regional Cancer Centre, Toronto

St. Michael's Hospital - Toronto, Toronto

Princess Margaret Hospital, Toronto

Centre Hospitalier de l'Universite de Montreal, Montreal

Royal Victoria Hospital - Montreal, Montreal

Jewish General Hospital - Montreal, Montreal

St. Mary's Hospital Center, Montreal

Centre Hospitalier Universitaire de Quebec, Québec

MBCCOP - San Juan, San Juan