Sentinel Lymph Node Biopsy in Pure DCIS: Is It Necessary?

Table 3

Sentinel lymph node positivity in patients diagnosed with pure ductal carcinoma in situ (DCIS) determined by hematoxylin and eosin (H&E) staining or immunohistochemistry (IHC).

Institution	No. of patients (𝑛)	Sentinel lymph node positivity in pure DCIS: by H&E or (IHC)
European Institute of Oncology, Milan [3]	854	1.9%
University of Padova, Italy [4]	102	1%
Lee Moffitt Cancer Center, FL, USA [5]	195	13%: 6.5% by H&E; 6.5% by IHC
Lee Moffitt Cancer Center, FL, USA [6]	559	5%: 1.5% by H&E, 3.5% by IHC
University of Paris, France [7]	110	6%
Sibley Memorial Hospital, Washington DC, USA [8]	110	7.2%: 3.6% by H&E; 3.6% by IHC
Memorial Sloan Kettering Cancer Center [9]	76	12%
Acibadem University, Faculty of Medicine, Istanbul (present study)	40	5%: 2.5% by H&E, 2.5% by IHC