Long-term results after proactive management for locoregional control in patients with colonic cancer at high risk of peritoneal metastases.

PURPOSE: A major problem in treating patients with peritoneal spread from colorectal cancer is that at diagnosis wide peritoneal involvement often precludes all curative attempts. A possible solution is to identify those patients at risk for peritoneal metastases and intervene early to prevent locoregional disease spread before it develops and, thus, to improve outcome. METHODS: We analyzed long-term results from a previous study and compared outcomes in 25 patients with advanced colon cancer considered at high risk for peritoneal spread (pT3/pT4 and mucinous or signet ring cell histology) prospectively included and managed with a proactive surgical approach including target organ resection for peritoneal spread plus hyperthermic intraperitoneal chemotherapy (HIPEC) and in 50 retrospectively well-matched controls who underwent standard surgical resection during the same period and in the same hospital by different surgical teams. RESULTS: At 48 months after the study closed, peritoneal metastases and local recurrence developed significantly less often in proactively managed patients than in controls (4 vs 28%) (p < 0.03). Patients in the proactive group also survived longer than control patients (median overall survival 59.5 vs 52 months). Despite similar morbidity, Kaplan-Meier survival curves disclosed significantly longer disease-free and overall survival in the proactive than in the control group (p < 0.05 and <0.04). CONCLUSIONS: In patients with advanced colon cancer at risk for peritoneal recurrence, the proactive surgical approach plus HIPEC seems to achieve good locoregional control preventing peritoneal spread thus improving outcome without increasing morbidity. These advantages merit investigation in a multicentric randomized trial.

Axillary lymph node metastasis as first presentation of peritoneal carcinomatosis from serous papillary ovarian cancer: case report and review of the literature.

Ovarian cancer usually spreads into abdominal cavity and to the loco-regional lymph nodes. Extra-abdominal metastases are less frequent and isolated axillary metastases are very rare. The authors describe the case of a 49-year-old woman who was diagnosed with a peritoneal carcinomatosis from ovarian cancer by mean of an enlarged axillary lymph node biopsy, whose histological examination identified as a ovarian cancer metastasis. Patient was treated by peritonectomy and intraperitoneal chemohyperthermic perfusion (HIPEC). Although patients with axillary lymph node metastasis from ovarian cancer are though to be metastatic (FIGO Stage IV), surgical radical treatment and adjuvant systemic chemotherapy can achieve the same prognosis of Stage IIIb-c patients, suggesting they could be a particularly good prognosis subset of patients. Early differential diagnosis between ovarian or breast cancer in axillary lymph node metastasis is crucial but not always very simple, because of the very different course and treatment of these tumours.