Evidence map›Paper›PMID 41491665›Full record

ArticleVeterinary and comparative oncology2026

A Multi-Institutional Retrospective Study of 21 Dogs Having Undergone Hypofractionated Radiotherapy for Adrenal Tumours (2017-2024).

Yen-Hao Erik Lai, Michael S Kent, Michael W Nolan, Dah-Renn Fu, Jayme S Looper

Abstract readMulticenter Study
In one paragraph

Article in Veterinary and comparative oncology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Yen-Hao Erik LaiDepartment of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, USA.
Michael S KentDepartment of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California, USA.ORCID https://orcid.org/0000-0002-7703-7720
Michael W NolanDepartment of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, USA.ORCID https://orcid.org/0000-0002-4432-9700
Dah-Renn FuDepartment of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio, USA.ORCID https://orcid.org/0000-0001-8959-4535
Jayme S LooperDepartment of Veterinary Clinical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, Louisiana, USA.ORCID https://orcid.org/0000-0001-7296-4413

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Radiation therapy (RT) has emerged as a promising non-surgical approach for treating canine adrenal tumours. This multi-institutional, retrospective study describes clinical outcomes for 21 dogs having been prescribed a course of hypofractionated image-guided intensity-modulated RT (IMRT) entailing delivery of 25-35 Gy total in 5 fractions given over 5-15 days for an adrenal tumour. Diagnoses were based on imaging (abdominal ultrasound or computed tomography) and biochemical testing. All dogs had unilateral or bilateral irregular adrenal masses with evidence of vessel compression or invasion. Adrenal masses were incidentally identified in 11 dogs. The clinical diagnoses included pheochromocytoma (n = 13, 61.9%), adrenocortical adenocarcinoma (n = 2, 9.5%) and unspecified (n = 6, 28.6%). Among the 16 dogs with available follow-up imaging, the rates of partial response and stable disease were 37.5% (6/16) and 62.5% (10/16), respectively. Mild gastrointestinal side effects related to RT were reported in four dogs (19%). Early death that could have been attributable to tumour or complications of treatment occurred in two dogs (9.5%) at 21 and 52 days post-RT; one presenting with acute vomiting, and the other presenting with vomiting, tremors, and shock before death. Of the 15 deceased dogs, 4 (26.7%) died due to tumour-related causes and 11 died due to unknown (n = 2) or unrelated (n = 9) causes. The median overall survival time was 377 days, with a median follow-up time of 458 days for censored patients (n = 6). The one- and two-year survival rates were 59.4% and 34.7%, respectively. These data build upon prior published reports, demonstrating that RT can be associated with prolonged survival in dogs with adrenal tumours. Hypofractionated IMRT appears to offer a potential survival benefit even in dogs with major vessel invasion or comorbidities. Future research should focus on identifying risk factors for early death and determining which patient populations are most likely to benefit from RT.

Indexed as

Adrenal Gland NeoplasmsDog DiseasesRadiotherapy, Intensity-ModulatedAnimalsDogsFemaleMaleRadiation Dose HypofractionationRetrospective StudiesTreatment Outcome

Identifiers

PMID41491665
PMCPMC13161733

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.