Ignasi Poves1, Fernando Burdio1, Sandra Alonso1, Agustín Seoane2, Luís Grande1
Departments of 1General and Digestive Surgery and 2Gastroenterology, “Hospital del Mar”. Barcelona, Spain
Received September 16th, 2010 - Accepted December 14th, 2010
Context Primary adenocarcinoma of the duodenum is a rare digestive malignancy which is commonly treated by radical surgical resection, pancreaticoduodenectomy being the technique of choice. Complete tumor resection obtaining free margins should be the standard of treatment for primary adenocarcinoma of the duodenum. Segmental duodenal resection is an appropriate operation for selected cases of primary adenocarcinoma of the duodenum of the 3rd and 4th portions of the duodenum. Case report We present the case of a 67-year-old woman suffering from an infra-ampullary large villous polypoid mass affecting the 3rd portion of the duodenum. Multiple endoscopic biopsies did not disclose any malignancy, and abdominal CT and endoscopic ultrasound found no extraduodenal involvement. A 3rd and 4th portion pancreas-sparing duodenectomy was carried out using a totally laparoscopic approach. Intra-operatory duodenoscopy was done to safeguard the papilla of Vater. Recovery was uneventful and the patient was discharged on the 7th postoperative day. The final diagnosis was primary adenocarcinoma of the duodenum (free resection margins). After forty-five months of follow-up, the patient is free of disease. Conclusions We recommend this procedure for treatment of an infra-ampullary benign and pre-malignant duodenal pathology; it can also be a treatment option and an alternative to a pancreaticoduodenectomy in very selected cases of tumors confined to the duodenum. Expertise in both pancreatic surgery and laparoscopic techniques is required.
Duodenal Neoplasms; Duodenoscopy; Laparoscopy /surgery; Pancreaticoduodenectomy
Primary adenocarcinoma of the duodenum is a rare digestive malignancy. Radical surgical resection is considered the treatment of choice, and a pancreaticoduodenectomy is the preferred surgical procedure regardless of the tumor site which is usually periampullary [1, 2]. Other more limited resection procedures, such as segmental duodenal resection and transduodenal excision, are considered only for selected cases [3, 4, 5, 6, 7]. Endoscopic snare excision and pancreas-sparing total duodenectomy have been considered only for the treatment of isolated benign polyps or in association with familial adenomatous polyposis . The laparoscopic approach for resection of the duodenum is still experimental, having only been used in benign disease .
A 67-year-old woman with a body mass index of 40 Kg/m2 was admitted to our hospital complaining of acute upper gastrointestinal bleeding. She had experienced a syncope episode followed by melenas. An upper digestive endoscopy revealed a large friable polypoid mass about 5 cm in diameter, surrounding 3/4 of the internal lumen, coming from the 3rd portion of the duodenum, about 3 cm distal to the ampulla (Figure 1). There were no other polypoid lesions in the duodenum. Multiple endoscopic biopsies (five samples) confirmed a villous adenomatous polyp with mild-moderate dysplasia. Abdominal CT showed the mass to be confined to the duodenum. An extension study was completed via endoscopic ultrasonography which showed no disruption of any of the muscle layers of the duodenum (Figure 2) and no penetration into the pancreas. The pancreatic duct was preserved and there were no pathological regional lymph nodes. Tumor markers (CEA and CA 19-9) were negative. From the day of admission to the day of the surgery, the patient required transfusion of 7 units of red blood cells.
A totally laparoscopic approach was used for the entire procedure using a five-port technique (Figure 3). The patient was placed in a reverse Trendelenburg position with the legs spread open. The surgeon stood between the patient’s legs and the 2 assistants at each side of the surgeon. The surgical procedure was started with a complete Kocher’s maneuver, detaching the greater omentum from the transverse colon along the avascular plane to the hepatic flexure of the colon. The head of the pancreas and the plane of the mesocolon were exposed. The tumor was clearly identified occupying the 3rd portion of the duodenum but having its origin near the 2nd portion. The retroduodenal and peripancreatic areas were carefully explored and no macroscopically pathological lymph nodes were found. Following dissection of the Treitz ligament, the first jejunal limb just distal to the duodenojejunal ligament was sectioned using a 45 mm linear cutter and 2.5 mm stapler. The sectioned proximal jejunum was then passed behind the mesenteric vessels. The duodenum was spared to the pancreas using ultrasound shears (Harmonic AceTM 5 mm, Ethicon Endo-Surgery, Guaynabo, Puerto Rico) (Figure 4). By means of concomitant intraoperative duodenoscopic vision of the ampulla, the duodenum was sectioned, just infraampullary, above the tumor, obtaining adequate free margins (Figure 5). The intestinal tract was reconstructed in a transmesocolic side-to-side duodenojejunostomy (45 mm linear cutter and 2.5 mm stapler and the enterotomy was closed with interrupted 2-0 polyglactin sutures) (Figure 6). The specimen was removed through the umbilical trocar and protected in a bag. The operation lasted 227 minutes.
The patient started oral intake on the 3rd postoperative day following a swallow control (Figure 7). Recovery was uneventful and she was discharged on the 7th postoperative day. Upper digestive endoscopy performed three months after surgery showed a normal anastomosis.
Final diagnosis was primary duodenal adenocarcinoma (moderate differentiation) over a villous adenoma. The size of the tumor was 75x55x19 mm (Figure 8). The depth of invasion was 3 mm near the serosa. Proximal (15 mm), distal and tangential resection margins were not affected. There was neither perineural nor microvascular invasion. No lymph nodes were harvested. One month after the surgical procedure, adjuvant chemotherapy was given (four cycles with oxaliplatin and capecitabine). After forty-five months of follow-up, there is no evidence of either local recurrence or metastatic disease on abdominal CT and upper digestive endoscopy.
Overall 5-year survival for primary adenocarcinoma of the duodenum is 23-31% [5, 6], rising to 51-60% [2, 4, 5, 6, 10] in resected patients. The reported experience from the Memorial Sloan-Kettering Cancer Center  showed that nodal metastases, regardless of their location, do not have an impact on survival. Only resectability and the presence of non-nodal metastases predict outcome. In this way, the Mayo Clinic experience  reports that lymph node metastasis, advanced tumor stage, and positive resection margins are associated with decreased survival, and hence recommends pursuing negative resection margins. These findings are supported by the majority of authors [3, 10]. When considering oncological benefits, segmental duodenal resection and wide local excision instead of a pancreaticoduodenectomy seem to be appropriate for selected patients, especially for tumors of the distal duodenum [6, 10]. A pancreaticoduodenectomy is an aggressive procedure well justified for the treatment of neoplasms of the head of the pancreas, periampullary area and duodenum, although it has considerable morbidity and mortality. For treatment of distal primary adenocarcinoma of the duodenum, a pancreaticoduodenectomy is associated with an increase in postoperative complications when compared to segmental duodenal resection even though they have equal outcomes [4, 6]. Primary adenocarcinoma of the duodenum usually extends to the pancreas. Direct extension of the tumor into the pancreas and involvement of pathological lymph nodes can now be preoperatively well documented by endoscopic ultrasonography, with subsequent consideration of segmental duodenal resection as an alternative treatment option.
The pancreas-sparing duodenectomy technique for the treatment of infra-ampullary duodenal pathologies was first described in 1996  for tumors located in the 3rd and/or 4th portions of the duodenum. In this case, the difficulty of a successful pancreas-sparing duodenectomy was that the tumor was located infrapapillary, thus it was mandatory to perform an intraoperatory duodenoscopy to preserve the papilla of Vater while maintaining disease-free margins when sectioning the duodenum. A laparoscopic pancreassparing duodenectomy has been described once in the literature, but only for the treatment of a benign peptic stricture of the 4th portion of a very distended duodenum . This is the first time that this procedure has been described for the treatment of duodenal tumors and for lesions involving the 3rd portion of the duodenum. Obviously, not only adequate experience in pancreatic surgery but also expertise in laparoscopy is mandatory for carrying out this procedure. Due to the difficulty involved in obtaining a large series of these rare tumors and since long term follow-up of this case is not yet available, we recommend this procedure as a less morbid option than a pancreaticoduodenectomy for the treatment of benign and pre-malignant infraampullary duodenal pathologies. It can also be a treatment option for patients suffering from duodenal gastrointestinal stromal tumors and for patients ruled out for a pancreaticoduodenectomy if the tumor is confined to the duodenal wall.
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