Current opinion in organ transplantation · 2023
Transplant oncology: multivisceral transplantation for neuroendocrine tumor and liver metastasis.
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Nagai Shunji
Аннотация
PURPOSE OF REVIEW: Neuroendocrine tumor (NET) liver metastatic lesions are often multiple and found to be unresectable. Rationale of multivisceral transplantation (MVT: liver-pancreas-intestine transplantation) include radical and complete resection of primary, visible and invisible metastatic tumors by removing all abdominal organs and the lymphatic system. This review aims to describe the concept of MVT for NET and neuroendocrine liver metastasis (NELM), patient selection, timing of MVT, and posttransplant outcomes and management.
RECENT FINDINGS: Although indication criteria of MVT for NET vary between transplant centers, the Milan-NET criteria for liver transplant are often applied to MVT candidates. Extra-abdominal tumors such as lung and/or bone lesions should be ruled out prior to MVT. Histology should be confirmed as low-grade (G1/G2). Ki-67 should be also checked to confirm biologic features. Timing of MVT remains controversial, whereas many experts recommend 6 months of disease stability prior to MVT.
SUMMARY: Although MVT would not be a standard therapy because of limited access to MVT centers, benefit of MVT should be recognized, which includes its potential ability to better achieve curative resection of disseminated tumors in the abdominal cavity. Early referral of difficult cases to MVT centers should be considered before palliative best supportive cares.
RECENT FINDINGS: Although indication criteria of MVT for NET vary between transplant centers, the Milan-NET criteria for liver transplant are often applied to MVT candidates. Extra-abdominal tumors such as lung and/or bone lesions should be ruled out prior to MVT. Histology should be confirmed as low-grade (G1/G2). Ki-67 should be also checked to confirm biologic features. Timing of MVT remains controversial, whereas many experts recommend 6 months of disease stability prior to MVT.
SUMMARY: Although MVT would not be a standard therapy because of limited access to MVT centers, benefit of MVT should be recognized, which includes its potential ability to better achieve curative resection of disseminated tumors in the abdominal cavity. Early referral of difficult cases to MVT centers should be considered before palliative best supportive cares.