Multimodal therapy for oligometastases after curative esophagectomy for esophageal cancer

Area of Science:

• Oncology
• Surgical Oncology
• Gastrointestinal Oncology

Background:

• Oligometastases, defined as limited metastatic disease, are increasingly recognized as potential therapeutic targets in cancer treatment.
• Esophageal cancer recurrence after curative esophagectomy presents significant management challenges.
• Understanding the characteristics and optimal treatment of oligometastatic recurrence is crucial for improving patient outcomes.

Purpose of the Study:

• To characterize oligometastatic recurrence patterns following curative esophagectomy for esophageal cancer.
• To evaluate the prognostic significance of oligometastases in this patient population.
• To identify effective therapeutic strategies for oligometastatic esophageal cancer recurrence.

Main Methods:

• A retrospective analysis of 138 patients with recurrent esophageal cancer after curative esophagectomy.
• Definition of oligometastases as three or fewer metastatic lesions within a single organ or lymph node station.
• Examination of recurrence site, timing, treatment modalities, and survival data.

Main Results:

• Oligometastases were identified in 26% of recurrent cases (36 out of 138 patients).
• Lymph node (21 patients) and lung (14 patients) were the most frequent sites of oligometastatic recurrence.
• Patients with oligometastases demonstrated a significantly better prognosis compared to those with multiple metastases (P < 0.0001).
• Surgical resection of oligometastases significantly impacted long-term survival (P = 0.012).

Conclusions:

• Oligometastases are a significant prognostic factor for esophageal cancer recurrence post-esophagectomy.
• Surgical resection of isolated oligometastases, particularly pulmonary and cervical lymph node metastases, offers a survival benefit.
• A combined approach of surgical resection with chemotherapy or radiotherapy is a promising strategy for managing oligometastatic recurrence.