Histologic grade has a higher-weighted value than nodal status as predictor of outcome in dogs with cutaneous mast cell tumours and overtly metastatic sentinel lymph nodes.
Kiupel high-grade
canine
lymphadenectomy
mastocytoma
sentinel lymph node metastasis
Journal
Veterinary and comparative oncology
ISSN: 1476-5829
Titre abrégé: Vet Comp Oncol
Pays: England
ID NLM: 101185242
Informations de publication
Date de publication:
Sep 2022
Sep 2022
Historique:
revised:
16
02
2022
received:
03
11
2021
accepted:
17
02
2022
pubmed:
24
2
2022
medline:
11
8
2022
entrez:
23
2
2022
Statut:
ppublish
Résumé
In canine cutaneous mast cell tumours (cMCTs), histologic grade and clinical stage are the most important prognostic factors, with high-grade tumours and metastatic lymph nodes (LNs) significantly influencing the evolution of disease. However, it is uncertain whether histologic grade and clinical stage should be given equal weighting value in patient prognostication and management. Dogs with low- and high-grade cMCTs and at least one overtly metastatic sentinel LN undergoing standardized treatment, consisting of surgical excision of the cMCT, lymphadenectomy and chemotherapy, were retrospectively included. The aim was to determine whether, at the same clinical stage, histologic grade retained prognostic relevance. Sixty dogs were included: 26 had a high-grade cMCT tumour and 34 had a low-grade cMCT. Median follow-up was 367 days (range, 187-748) in the high-grade group, and 1208 days (range, 180-2576) in the low-grade group. Median time to progression was significantly shorter in the high-grade group than in the low-grade group (214 days versus not reached; p < .001), as well as tumour-specific survival (545 days versus not reached; p < .001). On multivariable analysis, a high histologic grade and incomplete margins retained prognostic significance for both tumour progression and tumour-specific death. In dogs with cMCT and at least one overtly metastatic LN undergoing multimodal treatment, histologic grade significantly correlated with outcome. Overall prognosis was not unfavourable, even in the high-grade group, further supporting that a multimodal therapeutic approach, addressing primary tumour and sentinel LN, should be offered. Whether chemotherapy should be incorporated in the therapeutic planning of low-grade cMCTs remains to be defined.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
551-558Informations de copyright
© 2022 John Wiley & Sons Ltd.
Références
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