Pancreatic cancer generally develops without earlysymptoms,exceptwhenitisclosetothebileductandcausesbiliary obstruction. Up to two-thirds may be located in thehead of the pancreas. Approximately 30% of cases arerelated to smoking and 20% are associated with the type ofTable 1.
underbelly noun [S]. âº the âweakest or most âunpleasant âpart of something: a âfilm âexposing the âsordid underbelly of âmodern âurban âsociety Small âbusinesses are the âsoft underbelly (= âweakest âparts) of the âeconomy, and they need as much âgovernment âsupport as âpossible.
The pattern fades with age, leaving adult cottonmouth snakes with a uniform brown, gray or black coloring. The underbelly is usually pale or white (1). The snakes are a member of the vipiridae family, possessing hollow fangs to inject venom deep into its prey. It belongs to the subclass crotalinae, or pit-viper (1).