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Recurrence patterns after pancreaticoduodenectomy for ampullary cancer.
BACKGROUND: Few studies of the oncological outcomes of ampullary cancer have addressed recurrence, and many treatment-related issues remain unresolved. This study evaluated optimal surgical treatment strategies based on recurrence patterns after pancreaticoduodenectomy (PD) for ampullary cancer.
METHODS: Two hundred and fifty-nine patients who underwent PD with R0 resection for ampullary cancer from January 2000 to June 2012 were included. Generally, lymph node (LN) dissection extended to the right superior mesenteric artery (SMA). Recurrence was defined based on imaging studies. The first detected recurrence sites and patterns were analyzed.
RESULTS: During a mean follow-up of 51.3 months, recurrence occurred in 89 (34.4%) cases, most commonly in the liver. Poor differentiation, advanced T stage, and LN metastasis were identified as risk factors for recurrence. Locoregional and systemic recurrences occurred alone or simultaneously in 20.2%, 73.0%, and 6.7% of patients, respectively. Locoregional and systemic recurrences tended to occur in early- and advanced-stage cases, respectively. A nodal-type recurrence around mesenteric vessels was the most common locoregional recurrence pattern, and 58.8% (10/17) were located left of the SMA.
CONCLUSION: As nodal-type metastasis around the mesenteric vessels was the dominant recurrence pattern, careful LN dissection around the SMA should be considered for early and advanced ampullary cancers.
METHODS: Two hundred and fifty-nine patients who underwent PD with R0 resection for ampullary cancer from January 2000 to June 2012 were included. Generally, lymph node (LN) dissection extended to the right superior mesenteric artery (SMA). Recurrence was defined based on imaging studies. The first detected recurrence sites and patterns were analyzed.
RESULTS: During a mean follow-up of 51.3 months, recurrence occurred in 89 (34.4%) cases, most commonly in the liver. Poor differentiation, advanced T stage, and LN metastasis were identified as risk factors for recurrence. Locoregional and systemic recurrences occurred alone or simultaneously in 20.2%, 73.0%, and 6.7% of patients, respectively. Locoregional and systemic recurrences tended to occur in early- and advanced-stage cases, respectively. A nodal-type recurrence around mesenteric vessels was the most common locoregional recurrence pattern, and 58.8% (10/17) were located left of the SMA.
CONCLUSION: As nodal-type metastasis around the mesenteric vessels was the dominant recurrence pattern, careful LN dissection around the SMA should be considered for early and advanced ampullary cancers.
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