Dynamical lymphadenectomy as a component of multidisciplinary approach while doing operative interventions for pancreatic cancer

Abstract

Objective. To improve the results of treatment of pancreatic cancer, using modification of volumes of lymphadenectomy and application of multidisciplinary approach. Materials and methods. Into the investigation 16 patients, suffering a moderately differentiated (G2) adenocarcinoma of the pancreatic gland head (II stage of the disease) were included. There were 10 men and 6 women. The average age of the patients have constituted 62.4 yrs old. The patients were divided into two groups – the main and the comparative one, equally - by 8 of every group. In all the patients pancreaticoduodenal resection was done. All the patients in postoperative period have obtained gemcitabine in combination with 5-fluorouracyl. In patients of the main group a dynamical personalized intraoperative lymphadenectomy in accordance to our elaborated scheme, was performed. In patients of the comparison group lymphadenectomy was performed in accordance to the volumes adjusted, and it is called a standard one. Results. Average duration of the operation have constituted (347 ± 48) min, lymphadenectomy – (42 ± 12) min in the main group, and (31 ± 9) in the comparison group. Average volume of the blood loss have constituted (342 ± 272) ml. Average duration of hospitalization have constituted (8.2 ± 4.3) days, general rate of postoperative complications – 24.3% in both groups. After the operation the mortality was absent. Clinically significant lymphorrhea was observed in 3 patients in the main group, and in 5 – from the comparison group. In patients of the main group 9 ± 2 lymph nodes were excised, and in a comparative one – 13 ± 2, there were revealed 7 ± 1 (77.7%) and 9 ± 2 (60%) lymph nodes affected, accordingly. Postoperative diarrhea have occurred in 4 patients: in 3 – from comparative group, and in 1 – from the main group. Duration of the recurrence-free period in the main group have constituted (18 ± 2.3) mo, and in a comparative one – (13 ± 1.5) mo. Two years have survived 12/16 (75%) patients. In the main group one patient died, and in a comparative one - 3. The two-year survival in the main group have constituted 87.5%, and in a comparative one – 62.5%. Conclusion. Dynamical lymphadenectomy as a component of multidisciplinary approach gives possibility to reduce the quantity of the lymph nodes excised, unaffected by the tumor, to enhance the quantity of the excised lymph nodes trustworthily affected by the tumor, to lower the morbidity rate and to prolong the duration of the recurrence free period.

Keywords

• pancreatic cancer; pancreatic adenocarcinoma; pancreaticoduodenal resection; lymphadenectomy, lymphnode dissection.