Background: Neoadjuvant chemotherapy (NAC) is delivered before surgery to allow less extensive tumour resection, but the optimal surgical margin width after NAC is unknown. The aim of this study was to determine the impact of reassigned margins on local recurrence after NAC in dogs with mast cell tumours (MCTs).
Methods: A retrospective analysis was conducted for dogs with MCTs undergoing NAC consisting of vinblastine and prednisolone, subsequent tumour resection and lymphadenectomy, and a minimum follow-up of 6 months. Surgical margins were reassigned based on the size of the MCT after NAC. Pre- and post-NAC measurements of MCTs were recorded. The margin status was assessed with a combined radial and tangential sectioning technique; pre-NAC MCT cytograde and lymph node (LN) cytological status were compared with the Kiupel grade and Weishaar stage, respectively.
Results: Twenty-two dogs were included. MCT shrinkage after NAC consistently occurred, with a median reduction rate of 40.4% (range 5%-94.5%). Margins were complete in 15 of 22 dogs, and two MCTs and three LNs appeared histologically downgraded and downstaged, respectively. Two (9.1%) MCTs recurred.
Limitations: The limitations of this study were the small sample size and relatively short follow-up.
Conclusion: NAC leads to shrinkage of canine MCTs, with the resulting reassigned surgical margins being associated with a low recurrence rate.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/vetr.4595 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Surgery for an Uncommon Pathology: Pancreatic Metastases from Renal Cell Carcinoma-Indications, Type of Pancreatectomy, and Outcomes in a Single-Center Experience.
Medicina (Kaunas)
December 2024
Department of General Surgery, Fundeni Clinical Institute, Carol Davila University of Medicine and Pharmacy, Fundeni Street No. 258, 022328 Bucharest, Romania.
: The role of surgery in pancreatic metastases of renal cell carcinoma (PM_RCC) is highly controversial, particularly in the context of modern systemic therapies and the conflicting results of studies published so far. This study aims to explore a single surgical center experience (including mainly pancreatic resections) regarding the indications, the type of pancreatectomies, and early and long-term outcomes for PM_RCC. : The data of all patients with surgery for PM_RCC (from 1 January 2002 to 31 December 2023) were retrospectively assessed, and potential predictors of survival were explored.
View Article and Find Full Text PDFCD44 Immunohistochemical Expression in Central and Peripheral Parts of Prostatic Adenocarcinoma: An Institutional Study.
Medicina (Kaunas)
December 2024
Department of Pathology and Cytology, University Hospital Center Rijeka, 51000 Rijeka, Croatia.
: Prostate cancer is one of the most commonly diagnosed cancers in the male population and the fifth leading cause of cancer death worldwide in men as of 2022. One of the potential biomarkers that can predict the progression of the disease is the transmembrane adhesion molecule CD44s. The aims of this study were to determine the expression of CD44s in prostate cancer in the central tumor mass and in the tumor periphery of the disease and to compare it with the clinicopathological parameters (PSA, Gleason score, surgical margins, and biochemical recurrence of the disease) in patients treated with radical prostatectomy.
View Article and Find Full Text PDFThe Effect of Hepatic Surgical Margins of Colorectal Liver Metastases on Prognosis: A Systematic Review and Meta-Analysis.
J Clin Med
December 2024
First Propaedeutic Surgery Department, University General Hospital of Thessaloniki AHEPA, Aristotle University of Thessaloniki, 54636 Thessaloniki, Greece.
Colorectal cancer is the third most common malignancy, with around half of patients developing liver metastases. Hepatectomy is the preferred treatment, but its success depends on several factors, including surgical margins. Various surgical margins have been suggested to achieve optimal results.
View Article and Find Full Text PDFContemporary Issues in Postmastectomy Radiotherapy: A Brief Review.
J Clin Med
December 2024
Northwest Regional Hospital, Rural Clinical School, The University of Tasmania, Burnie, TAS 7320, Australia.
Breast cancer is the one of the most common cancers and causes a significant disease burden. Currently, postmastectomy radiotherapy (PMRT) is indicated for breast cancer patients with higher risk of recurrence, such as those with positive surgical margins or high-risk breast cancer (T3 with positive lymph nodes, ≥4 positive lymph nodes or T4 disease). Whether PMRT should be used in intermediate-risk breast cancer (T3 with no positive lymph nodes or T1-2 with 1-3 positive lymph nodes) is contentious.
View Article and Find Full Text PDFEx Vivo Fluorescence Confocal Microscopy Meets Innovation and Revolutionary Technology, for "Real-Time" Histological Evaluation, in Pediatric Surgical Oncology.
Children (Basel)
November 2024
Pediatric Surgery Unit, Salesi Children's Hospital, Polytechnic University of Marche, Via Filippo Corridoni, 16, 60123 Ancona, Italy.
Background And Aim: Ex vivo fluorescence confocal microscopy (FCM) systems are innovative optical imaging tools that create virtual high-resolution histological images without any standard tissue processing, either freezing or fixing in formalin and embedding in paraffin. These systems have opened an era that would revolutionize pathological examination by providing rapid, real-time assessments across various pathology subspecialties, potentially replacing conventional methods that are tissue- and time-consuming. This study aimed to present the first utilization of FCM in pediatric surgical oncology, focusing on assessing the benefits, particularly in facilitating rapid and accurate diagnosis.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!