Table 2 Changes in characteristics of branch duct intraductal papillary mucinous neoplasms during follow-up
Period during follow-upMain ductBranch ductsIntraductal tumour
<4 mm5–9 mm>10 mm<29 mm30–39 mm>40 mm<4 mm5–9 mm>10 mm
Initial exam35 (58%)25 (42%)0 (0%)48 (80%)8 (13%)4 (7%)57 (95%)3 (5%)0 (0%)
Latest exam28 (47%)27 (45%)5 (8%)28 (47%)21 (35%)11 (18%)52 (87%)7 (12%)1 (2%)