The communication with the atrium is guarded by a valvula cardiaca dextra, which only in function represents the mammalian tricuspid; it consists of an oblique reduplication of the muscular fibres together with the endocardiac lining of the right ventricle, while the opposite wall is convex and forms neither a velum nor papillary muscles, nor chordae tendineae.
Both develop in cells that produce thyroid hormones, but papillary cancer tends to grow slowly and is usually curable.
This ambiguity can be resolved by transforming the measured color co-ordinates to compensate for the thickness of the papillary dermis.
After complete resection papillary cystic neoplasm has a good prognosis with a low rate of recurrence.
About 1% of patients develop pancreatitis and 5% of those who undergo a sphincterotomy develop late papillary stenosis.