Treatment Approach for Periampullary Mass

Initial Diagnostic Workup

The American Gastroenterological Association recommends obtaining a pancreas protocol CT scan with dual-phase contrast enhancement as the primary imaging modality to assess resectability and vascular involvement 2
The National Comprehensive Cancer Network suggests including chest imaging to evaluate for pulmonary metastases 2
The American College of Radiology recommends obtaining baseline laboratory tests including liver function tests, CA 19-9 tumor marker, fasting glucose or HbA1c, and lipase/amylase 2
The European Society of Gastrointestinal Endoscopy recommends using MRI with MRCP when IV contrast is contraindicated, offering superior soft-tissue contrast 2

The American College of Surgeons recommends proceeding directly to surgical consultation without tissue diagnosis for resectable disease 2
The Society of Surgical Oncology suggests performing radical pancreaticoduodenectomy (Whipple procedure) as the treatment of choice for resectable periampullary masses 1
The American College of Surgeons notes that operative mortality should be <10% in experienced hands 1

The European Association for the Study of the Liver recommends endoscopic drainage over percutaneous drainage for distal cholangiocarcinoma and periampullary masses 3, 4
The American Society for Gastrointestinal Endoscopy suggests that metallic stents offer advantages in high-volume centers and when neoadjuvant chemotherapy is planned, with lower interventions and direct costs compared to plastic stents 4

The National Comprehensive Cancer Network recommends that tissue diagnosis is mandatory before initiating systemic therapy for advanced/metastatic disease 2
The European Society of Medical Oncology suggests that self-expanding metal stents (SEMSs) are preferred for palliative biliary drainage, offering higher therapeutic success, lower occlusion rates, and fewer re-interventions 3, 4
The American College of Surgeons notes that documenting ECOG performance status is essential, as this impacts treatment eligibility 2
The International Society for Digestive Surgery recommends stage 4 duodenal polyposis warrants surgical resection via pylorus-preserving pancreaticoduodenectomy for Familial Adenomatous Polyposis (FAP) patients 1, 5, 6