Nodal recurrence mapping and clinical target volumes after resection of intrahepatic cholangiocarcinoma or combined hepatocellular-cholangiocarcinoma

© 2024 The Author(s)..

Background: Scarce evidence exists for clinical target volume (CTV) definitions of regional lymph nodes (LNs) in intrahepatic cholangiocarcinoma (iCCA) or combined hepatocellular-cholangiocarcinoma (cHCC-CCA). We investigated the mapping pattern of nodal recurrence after surgery for iCCA and cHCC-CCA and provided evidence for the nodal CTV definition.

Methods: We retrospectively reviewed the medical records of patients with iCCA or cHCC-CCA who underwent surgery between 2010 and 2020. Eligibility criteria included patients pathologically diagnosed with iCCA or cHCC-CCA after surgery and a first recurrent event in regional LNs during follow-up. All recurrent LNs were registered onto reference computed tomography images based on the vascular structures to reconstruct the node mapping. Fifty-three patients were eligible. LN regions were classified into four risk groups.

Results: Hepatic hilar and portal vein-vena cava were the most common recurrent regions, with recurrence rates of 62.3 % and 39.6 % (high-risk regions), respectively. Recurrence rates in the left gastric, diaphragmatic, common hepatic, superior mesenteric vessels, celiac trunk, and paracardial regions ranged from 15.1 % to 30.2 % (intermediate-risk regions). There were fewer recurrences in the para-aortic (16a1, a2, b1) and splenic artery and hilum regions, with rates <10 % (low-risk regions). No LN recurrence was observed in the para-oesophageal or para-aortic region (16b2) (very low-risk regions). Based on node mapping, the CTV should include high- and intermediate-risk regions for pathologically negative LN patients during postoperative radiotherapy. Low-risk regions should be included for pathologically positive LN patients.

Conclusion: We provide evidence for CTV delineation in patients with iCCA and cHCC-CCA based on recurrent LN mapping.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:45

Enthalten in:

Clinical and translational radiation oncology - 45(2024) vom: 19. März, Seite 100749

Sprache:

Englisch

Beteiligte Personen:

Yang, Zhuanbo [VerfasserIn]
Wang, Liming [VerfasserIn]
Zhai, Yirui [VerfasserIn]
Zhao, Jianjun [VerfasserIn]
Ye, Feng [VerfasserIn]
Wang, Shulian [VerfasserIn]
Jiang, Liming [VerfasserIn]
Song, Yan [VerfasserIn]
Sun, Yongkun [VerfasserIn]
Zhu, Ji [VerfasserIn]
Tang, Yuan [VerfasserIn]
Liu, Yueping [VerfasserIn]
Song, Yongwen [VerfasserIn]
Fang, Hui [VerfasserIn]
Li, Ning [VerfasserIn]
Qi, Shunan [VerfasserIn]
Lu, Ningning [VerfasserIn]
Li, Ye-Xiong [VerfasserIn]
Zhao, Hong [VerfasserIn]
Chen, Bo [VerfasserIn]

Links:

Volltext

Themen:

Clinical target volume
Combined hepatocellular-cholangiocarcinoma
Intrahepatic cholangiocarcinoma
Journal Article
Recurrent lymph node mapping

Anmerkungen:

Date Revised 02.03.2024

published: Electronic-eCollection

Citation Status PubMed-not-MEDLINE

doi:

10.1016/j.ctro.2024.100749

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM369153669