What does the Billroth II procedure involve?

The Billroth II procedure is a surgical technique that involves a subtotal resection of the stomach, typically the distal part, followed by an anastomosis to the jejunum, which is a part of the small intestine. This procedure is performed to treat various conditions, including complications of peptic ulcer disease.

During the Billroth II, the remaining portion of the stomach is connected to the jejunum, effectively bypassing the duodenum. This is necessary for certain patients where the duodenum is not intact or can no longer function effectively due to disease or surgical intervention. The gastrojejunostomy created in this procedure allows for continued passage of food while accommodating changes post-resection.

The other choices do not accurately describe the Billroth II procedure. For example, a surgical procedure for pancreatic carcinoma would involve different anatomical considerations and approaches. An incision made lateral to the midline does not specifically relate to the characteristics of the Billroth II. Lastly, a longitudinal ulcer in the anal canal pertains to a completely different anatomical area and situation unrelated to the gastric surgeries such as Billroth II. Thus, option C correctly encapsulates the core aspects and intent of the Billroth II procedure.