There are two types of bile duct cancer: 1  Intrahepatic bile duct cancer : This type of cancer forms in the bile ducts inside the liver. 2  Extrahepatic bile duct cancer : The extrahepatic bile duct is made up of the hilum region and the distal region.
Crocodiles (subfamily Crocodylinae) or true crocodiles are large aquatic reptiles that live throughout the tropics in Africa, Asia, the Americas and Australia. Crocodylinae, all of whose members are considered true crocodiles, is classified as a biological subfamily. A broader sense of the term crocodile, Crocodylidae that includes Tomistoma, is not used in this article. The term crocodile here applies only to the species within the subfamily of Crocodylinae.
1 Also, crocodiles occur only in tropical and subtropical areas (only south Florida in the United States), while alligators live in somewhat colder climates. 2  Being ectotherms, alligators do not need to eat much a 100-lb dog will eat more in a year than an 800-lb alligator. Alligators and crocodiles are related. 2  However, alligators have rounded snouts, while most crocodile species have longer, pointed snouts. 3  Also, crocodiles occur only in tropical and subtropical areas (only south Florida in the United States), while alligators live in somewhat colder climates.