Fig. 4.
IPMN morphologies. (A and B) Typical IPMN before (A) and after (B) microdissection of the epithelium lining the cyst wall. (C and D) Examples of multiloculated IPMNs from two different patients. (E and F) IPMN (E) and associated invasive adenocarcinoma (F) from the same patient. (G and H) Another patient with an IPMN (G) and associated invasive adenocarcinoma (H). All photographs were of formalin-fixed, paraffin-embedded samples stained with hematoxylin and eosin. Scale bars, 500 μm [(A) to (C)], 200 μm [(D) and (E)], and 100 μm [(F) to (H)].