4.6 Article

Isolated brachioradialis metastasis of gastric adenocarcinoma after R0 resection

Journal

WORLD JOURNAL OF SURGICAL ONCOLOGY
Volume 19, Issue 1, Pages -

Publisher

BMC
DOI: 10.1186/s12957-021-02191-9

Keywords

Gastric cancer; Metastatic cancer; Tumor biology; D2 lymphadenectomy

Funding

  1. Bassett Research Institute

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This case presents a rare instance of isolated extremity metastasis of gastric adenocarcinoma following R0 resection of the primary tumor and negative nodal disease, suggesting hematogenous spread. It underscores the importance of understanding the biology, workup, and management of gastric cancer for improved treatment outcomes.
Background Gastric cancer is the fifth most common cancer worldwide, with an incidence of 6.72 per 100,000 people. Thirty-two percent of gastric cancer patients will live 5 years after diagnosis. Single-site metastasis is noted in 26% of patients with gastric cancer, most commonly in the liver (48%), peritoneum (32%), lung (15%), and bone (12%). Here, a case is presented in which a single skeletal muscle metastasis appeared after appropriate resection and treatment. Case presentation A 63-year-old man underwent neoadjuvant chemotherapy and a multivisceral en bloc R0 resection. Final pathology showed no evidence of lymph node metastasis with 31 negative lymph nodes. Four months postoperatively, the patient was found to have a rapidly growing biopsy-proven extremity soft tissue gastric metastasis within the brachioradialis muscle. He subsequently underwent metastasectomy and immunotherapy. Conclusion This case is a rare example of an isolated extremity metastasis of gastric adenocarcinoma in the setting of an R0 resection of the primary tumor and negative nodal disease on final pathology, suggestive of hematogenous spread. We review the biology, workup, and management of gastric cancer and highlight new advancements in the treatment of this aggressive cancer.

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