Final answer:
Duodenal adenocarcinomas represent 1/2 of all small intestine malignancies and the most common site is the duodenum. The surgical management for duodenal adenocarcinomas typically involves a combination of surgery and, in some cases, other treatment modalities such as chemotherapy or radiation therapy.
Step-by-step explanation:
The small intestine malignancies that represent 1/2 of all cases are called duodenal adenocarcinomas. The most common site for these malignancies is the duodenum, which is the first and shortest segment of the small intestine.
The surgical management for duodenal adenocarcinomas typically involves a combination of surgery and, in some cases, other treatment modalities such as chemotherapy or radiation therapy. The specific surgical procedure depends on factors such as the size and location of the tumor, as well as the overall health of the patient.