Table 1

Proposed scoring system for ductoscopic appearances (Mokbel's classification system)

D0
Inadequate views/unsuccessful procedure
D1
Normal mammary ducts
D2
Typically benign appearance
D3
Low index of suspicion/indeterminate most likely benign
D4
Appearances suspicious of malignancy
D5
Appearances suspicious of malignancy plus positive ductscopic cytology

Al Sarakbi et al. International Seminars in Surgical Oncology 2006 3:16   doi:10.1186/1477-7800-3-16