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Bertram CA, Donovan TA, Bartel A. Mitotic activity: A systematic literature review of the assessment methodology and prognostic value in feline tumors. Vet Pathol 2024; 61:743-751. [PMID: 38533803 PMCID: PMC11370206 DOI: 10.1177/03009858241239566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
Increased proliferation is a driver of tumorigenesis, and quantification of mitotic activity is a standard task for prognostication. This systematic review is an analysis of all available references on mitotic activity in feline tumors to provide an overview of the assessment methods and prognostic value. A systematic literature search in PubMed and Scopus and a nonsystematic search in Google Scholar were conducted. All articles on feline tumors that correlated mitotic activity with patient outcome were identified. Data analysis revealed that of the 42 eligible articles, mitotic count (MC, mitotic figures/tumor area) was evaluated in 39 studies, and mitotic index (MI, mitotic figures/tumor cells) in 3 studies. The risk of bias was considered high for most studies (26/42, 62%) based on small study populations, insufficient details of the MC/MI methods, and lack of statistical measures for diagnostic accuracy or effect on outcome. The MC/MI methods varied between studies. A significant association of MC with survival was determined in 20 of 28 (71%) studies (10 studies evaluated other outcome metrics or provided individual patient data), while 1 study found an inverse effect. Three tumor types had at least 4 studies, and a prognostic association with survival was found in 5 of 6 studies on mast cell tumors, 5 of 5 on mammary tumors, and 3 of 4 on soft-tissue sarcomas. MI was shown to correlate with survival for mammary tumors by 2 research groups; however, comparisons to MC were not conducted. Further studies with standardized mitotic activity methods and appropriate statistical analysis for discriminant ability of patient outcome are needed to infer the prognostic value of MC and MI.
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Mikiewicz M, Paździor-Czapula K, Fiedorowicz J, Otrocka-Domagała I. Expression of programmed cell death protein 1 and programmed cell death ligand 1 in feline injection site fibrosarcomas. Res Vet Sci 2024; 176:105350. [PMID: 38963993 DOI: 10.1016/j.rvsc.2024.105350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 05/31/2024] [Accepted: 06/30/2024] [Indexed: 07/06/2024]
Abstract
Feline injection site fibrosarcomas represent a unique challenge in veterinary oncology due to their association with injection sites and aggressive behaviour. The study explores the expression of immune checkpoints programmed cell death protein 1 and programmed cell death ligand 1 in the malignancy, aiming to unravel their potential significance in tumour progression. The study included 31, archival diagnostic specimens of feline fibrosarcomas, located in the common injection sites. The programmed cell death protein 1 and programmed cell death ligand 1 expression in tumour cells and tumour infiltrating lymphocytes were assessed by immunohistochemical methods. Programmed cell death protein 1 and programmed cell death ligand 1 expression were observed in 84% and 81% of cases, respectively. In tumour infiltrating lymphocytes the PD-1 expression was observed in 71% of cases. Notably, higher programmed cell death protein 1 expression correlated with tumour grade and heightened inflammation score, suggesting a potential association with tumour aggressiveness. Similarly, programmed cell death ligand 1 expression exhibited a positive correlation with tumour grade and inflammation score. The observed findings suggest a potential role for programmed cell death protein 1 and programmed cell death ligand 1 in tumour progression and immune response within the tumour microenvironment. Moreover, this study contributes to a deeper understanding of feline injection site fibrosarcoma pathogenesis, emphasizing the importance of considering immunological perspectives in developing effective treatment strategies for this challenging condition. Further investigations are warranted to advance our knowledge and refine therapeutic approaches for feline injection site fibrosarcoma management.
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Affiliation(s)
- Mateusz Mikiewicz
- Department of Pathological Anatomy, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 13, 10-719 Olsztyn, Poland.
| | - Katarzyna Paździor-Czapula
- Department of Pathological Anatomy, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 13, 10-719 Olsztyn, Poland
| | - Joanna Fiedorowicz
- Department of Pathological Anatomy, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 13, 10-719 Olsztyn, Poland
| | - Iwona Otrocka-Domagała
- Department of Pathological Anatomy, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 13, 10-719 Olsztyn, Poland
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Araújo RLS, Carvalho ASS, Moreira MVL, Galera PD. Presumed myxosarcoma in the eyelid of a cat: Case report. Vet Ophthalmol 2024. [PMID: 39034454 DOI: 10.1111/vop.13252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 06/08/2024] [Accepted: 06/18/2024] [Indexed: 07/23/2024]
Abstract
OBJECTIVE To describe the clinical and pathological characteristics of a neoformation suggestive of myxosarcoma in a cat's eyelid. ANIMAL STUDIED An 11-year-old mixed-breed castrated female cat presented with a nodule on the lower eyelid approximately 1.6 cm in diameter, multilobulated, non-ulcerated, soft, and adhered to both the skin and conjunctiva of the lower eyelid. PROCEDURES The incisional biopsy revealed findings suggestive of a peripheral nerve sheath tumor. After performing an exenteration of the right eyeball to ensure a safe surgical margin, the tissue samples were sent for histopathological analysis and later for immunohistochemistry. RESULTS Microscopic evaluation classified the mass as a grade-I mesenchymal neoplasm, suggesting myxosarcoma and malignant peripheral nerve sheath tumor as differential diagnoses. An immunohistochemical examination was carried out to differentiate the neoplasm. Once tumors of neural origin were excluded, the diagnosis of myxosarcoma was indicated as the most likely. CONCLUSION We report a presumed case of eyelid myxosarcoma in a cat, highlighting its relevance in the differential diagnosis in the evaluation of eyelid and conjunctival neoplasms in cats.
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Affiliation(s)
- Rosélia L S Araújo
- College of Agronomy and Veterinary Medicine, University of Brasília, Brasilia, Brazil
| | - Aline S S Carvalho
- College of Agronomy and Veterinary Medicine, University of Brasília, Brasilia, Brazil
| | | | - Paula D Galera
- College of Agronomy and Veterinary Medicine, University of Brasília, Brasilia, Brazil
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Aubreville M, Stathonikos N, Donovan TA, Klopfleisch R, Ammeling J, Ganz J, Wilm F, Veta M, Jabari S, Eckstein M, Annuscheit J, Krumnow C, Bozaba E, Çayır S, Gu H, Chen X'A, Jahanifar M, Shephard A, Kondo S, Kasai S, Kotte S, Saipradeep VG, Lafarge MW, Koelzer VH, Wang Z, Zhang Y, Yang S, Wang X, Breininger K, Bertram CA. Domain generalization across tumor types, laboratories, and species - Insights from the 2022 edition of the Mitosis Domain Generalization Challenge. Med Image Anal 2024; 94:103155. [PMID: 38537415 DOI: 10.1016/j.media.2024.103155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 01/19/2024] [Accepted: 03/20/2024] [Indexed: 04/16/2024]
Abstract
Recognition of mitotic figures in histologic tumor specimens is highly relevant to patient outcome assessment. This task is challenging for algorithms and human experts alike, with deterioration of algorithmic performance under shifts in image representations. Considerable covariate shifts occur when assessment is performed on different tumor types, images are acquired using different digitization devices, or specimens are produced in different laboratories. This observation motivated the inception of the 2022 challenge on MItosis Domain Generalization (MIDOG 2022). The challenge provided annotated histologic tumor images from six different domains and evaluated the algorithmic approaches for mitotic figure detection provided by nine challenge participants on ten independent domains. Ground truth for mitotic figure detection was established in two ways: a three-expert majority vote and an independent, immunohistochemistry-assisted set of labels. This work represents an overview of the challenge tasks, the algorithmic strategies employed by the participants, and potential factors contributing to their success. With an F1 score of 0.764 for the top-performing team, we summarize that domain generalization across various tumor domains is possible with today's deep learning-based recognition pipelines. However, we also found that domain characteristics not present in the training set (feline as new species, spindle cell shape as new morphology and a new scanner) led to small but significant decreases in performance. When assessed against the immunohistochemistry-assisted reference standard, all methods resulted in reduced recall scores, with only minor changes in the order of participants in the ranking.
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Affiliation(s)
| | | | - Taryn A Donovan
- Department of Anatomic Pathology, The Schwarzman Animal Medical Center, NY, USA
| | - Robert Klopfleisch
- Institute of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | | | - Jonathan Ganz
- Technische Hochschule Ingolstadt, Ingolstadt, Germany
| | - Frauke Wilm
- Pattern Recognition Lab, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany; Department Artificial Intelligence in Biomedical Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Mitko Veta
- Computational Pathology Group, Radboud UMC Nijmegen, The Netherlands
| | - Samir Jabari
- Institute of Neuropathology, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Markus Eckstein
- Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nünberg, Erlangen, Germany
| | | | | | - Engin Bozaba
- Artificial Intelligence Research Team, Virasoft Corporation, NY, USA
| | - Sercan Çayır
- Artificial Intelligence Research Team, Virasoft Corporation, NY, USA
| | - Hongyan Gu
- University of California, Los Angeles, USA
| | | | | | | | | | - Satoshi Kasai
- Niigata University of Health and Welfare, Niigata, Japan
| | - Sujatha Kotte
- TCS Research, Tata Consultancy Services Ltd, Hyderabad, India
| | - V G Saipradeep
- TCS Research, Tata Consultancy Services Ltd, Hyderabad, India
| | - Maxime W Lafarge
- Department of Pathology and Molecular Pathology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Viktor H Koelzer
- Department of Pathology and Molecular Pathology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Ziyue Wang
- Harbin Institute of Technology, Shenzhen, China
| | | | - Sen Yang
- College of Biomedical Engineering, Sichuan University, Chengdu, China
| | - Xiyue Wang
- Department of Radiation Oncology, Stanford University School of Medicine, Palo Alto, USA
| | - Katharina Breininger
- Department Artificial Intelligence in Biomedical Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Christof A Bertram
- Institute of Pathology, University of Veterinary Medicine, Vienna, Austria
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Soto S, Blatter S, Hobi S, Steck M, Lechmann J, Rüfenacht S, Kühn N, Ruetten M, Ignatenko N, Krudewig C. Feline Facial Spindle Cell Tumors in 29 Cats: Histomorphological and Immunohistochemical Characterization. Animals (Basel) 2024; 14:1103. [PMID: 38612342 PMCID: PMC11010864 DOI: 10.3390/ani14071103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 03/28/2024] [Accepted: 03/29/2024] [Indexed: 04/14/2024] Open
Abstract
Soft tissue tumors/sarcomas (STSs) in felines, encompassing a variety of mesenchymal tumors with similar histomorphological features, present diagnostic challenges due to their diverse cellular origins and the overlap with other tumor types such as feline sarcoid. This study aimed to delineate the clinical, histomorphological, and immunohistochemical characteristics of 34 feline facial spindle cell tumors affecting 29 cats, including testing for bovine papillomavirus type 14 (BPV14), the virus causing feline sarcoids. Only five out of 12 tumors previously diagnosed as feline sarcoids based on histomorphology were confirmed by PCR for BPV14, underscoring the importance of comprehensive diagnostic approaches to accurately distinguish between STSs and feline sarcoids. This study shows that most facial spindle cell tumors were compatible with peripheral nerve sheath tumors (PNSTs) based on positive immunohistochemical staining for Sox10 and other immunohistochemical markers such as GFAP, NSE, and S100. Some of these tumors displayed as multiple independent masses on the face or as erosive and ulcerative lesions without obvious mass formation, an atypical presentation and an important highlight for general practitioners, dermatologists, and oncologists. This study also describes periadnexal whorling of neoplastic cells as a novel histomorphologic finding in feline facial PNSTs and emphasizes Sox10 as a useful complementary immunohistochemical marker for the diagnosis of facial PNST in cats, providing valuable insights for veterinary pathologists.
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Affiliation(s)
- Sara Soto
- Institute of Animal Pathology, Vetsuisse Faculty, University of Bern, 3012 Bern, Switzerland
| | - Sohvi Blatter
- Institute of Animal Pathology, Vetsuisse Faculty, University of Bern, 3012 Bern, Switzerland
| | - Stefan Hobi
- Department of Veterinary Clinical Sciences, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon Tong, Hong Kong SAR, China
| | - Marco Steck
- Institute of Virology, Vetsuisse Faculty, University of Zurich, 8057 Zurich, Switzerland
| | - Julia Lechmann
- Institute of Virology, Vetsuisse Faculty, University of Zurich, 8057 Zurich, Switzerland
| | | | - Nicolas Kühn
- Kühn Pathologie AG, 6331 Hünenberg, Switzerland;
| | | | - Nataliia Ignatenko
- Centre for Clinical Veterinary Medicine, University of Munich, 80539 Munich, Germany;
| | - Christiane Krudewig
- Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, 8057 Zurich, Switzerland
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Mikiewicz M, Paździor-Czapula K, Fiedorowicz J, Gesek M, Otrocka-Domagała I. Metallothionein expression in feline injection site fibrosarcomas. BMC Vet Res 2023; 19:42. [PMID: 36759896 PMCID: PMC9912506 DOI: 10.1186/s12917-023-03604-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 02/03/2023] [Indexed: 02/11/2023] Open
Abstract
BACKGROUND Feline injection site fibrosarcoma is an aggressive and infiltrative tumour arising in the background of chronic inflammation. The aim of this study was to evaluate the expression of metallothionein (I-II) in feline injection site fibrosarcomas and to assess its possible relationships with Ki67 index, inflammation score and tumour grade. The study included 40 feline fibrosarcomas, located in the common injection sites (i.e., interscapular area, thigh, flank), constituting archival diagnostic specimens collected between 2019-2020. Tumours were graded histologically according to the newly proposed soft-tissue sarcoma grading system in cats. Immunohistochemistry was performed to evaluate the expression of Ki67 and metallothionein in tumour cells. RESULTS The cytoplasmic and sometimes nuclear expression of metallothionein was observed in all tumours grade I, 66.67% of tumours grade II and 55% of tumours grade III. The expression of metallothionein was negatively correlated with tumour grade and inflammation score, while the Ki67 index was positively correlated with tumour grade, inflammation score and necrosis score. CONCLUSION The downregulation of MT expression in feline injection site fibrosarcomas seems to be connected with an increase in the inflammatory infiltration, hence tumour progression. This is the first study describing metallothionein expression in feline injection site fibrosarcomas.
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Affiliation(s)
- Mateusz Mikiewicz
- Department of Pathological Anatomy, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-719, Olsztyn, Poland.
| | - Katarzyna Paździor-Czapula
- grid.412607.60000 0001 2149 6795Department of Pathological Anatomy, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-719, Olsztyn, Poland
| | - Joanna Fiedorowicz
- grid.412607.60000 0001 2149 6795Department of Pathological Anatomy, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-719, Olsztyn, Poland
| | - Michał Gesek
- grid.412607.60000 0001 2149 6795Department of Pathological Anatomy, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-719, Olsztyn, Poland
| | - Iwona Otrocka-Domagała
- grid.412607.60000 0001 2149 6795Department of Pathological Anatomy, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-719, Olsztyn, Poland
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Ruger L, Yang E, Coutermarsh-Ott S, Vickers E, Gannon J, Nightengale M, Hsueh A, Ciepluch B, Dervisis N, Vlaisavljevich E, Klahn S. Histotripsy ablation for the treatment of feline injection site sarcomas: a first-in-cat in vivo feasibility study. Int J Hyperthermia 2023; 40:2210272. [PMID: 37196996 DOI: 10.1080/02656736.2023.2210272] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 04/28/2023] [Accepted: 04/28/2023] [Indexed: 05/19/2023] Open
Abstract
PURPOSE Feline soft tissue sarcoma (STS) and injection site sarcoma (fISS) are rapidly growing tumors with low metastatic potential, but locally aggressive behavior. Histotripsy is a non-invasive focused ultrasound therapy using controlled acoustic cavitation to mechanically disintegrate tissue. In this study, we investigated the in vivo safety and feasibility of histotripsy to treat fISS using a custom 1 MHz transducer. MATERIALS AND METHODS Three cats with naturally-occurring STS were treated with histotripsy before surgical removal of the tumor 3 to 6 days later. Gross and histological analyses were used to characterize the ablation efficacy of the treatment, and routine immunohistochemistry and batched cytokine analysis were used to investigate the acute immunological effects of histotripsy. RESULTS Results showed that histotripsy ablation was achievable and well-tolerated in all three cats. Precise cavitation bubble clouds were generated in all patients, and hematoxylin & eosin stained tissues revealed ablative damage in targeted regions. Immunohistochemical results identified an increase in IBA-1 positive cells in treated tissues, and no significant changes in cytokine concentrations were identified post-treatment. CONCLUSIONS Overall, the results of this study demonstrate the safety and feasibility of histotripsy to target and ablate superficial feline STS and fISS tumors and guide the clinical development of histotripsy devices for this application.
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Affiliation(s)
- Lauren Ruger
- Department of Biomedical Engineering and Mechanics, VA Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Ester Yang
- Department of Small Animal Clinical Sciences, Virginia-MD College of Veterinary Medicine, Blacksburg, VA, USA
- Virginia Tech Animal Cancer Care and Research Center, Virginia-Maryland College of Veterinary Medicine, Roanoke, VA, USA
| | - Sheryl Coutermarsh-Ott
- Biomedical Sciences and Pathobiology, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Elliana Vickers
- Department of Biomedical Engineering and Mechanics, VA Polytechnic Institute and State University, Blacksburg, VA, USA
- Virginia Tech Animal Cancer Care and Research Center, Virginia-Maryland College of Veterinary Medicine, Roanoke, VA, USA
- Graduate Program in Translational Biology, Medicine and Health, Virginia Polytechnic Institute and State University, Roanoke, VA, USA
| | - Jessica Gannon
- Department of Biomedical Engineering and Mechanics, VA Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Marlie Nightengale
- Department of Small Animal Clinical Sciences, Virginia-MD College of Veterinary Medicine, Blacksburg, VA, USA
- Virginia Tech Animal Cancer Care and Research Center, Virginia-Maryland College of Veterinary Medicine, Roanoke, VA, USA
| | - Andy Hsueh
- Department of Small Animal Clinical Sciences, Virginia-MD College of Veterinary Medicine, Blacksburg, VA, USA
- Virginia Tech Animal Cancer Care and Research Center, Virginia-Maryland College of Veterinary Medicine, Roanoke, VA, USA
| | - Brittany Ciepluch
- Department of Small Animal Clinical Sciences, Virginia-MD College of Veterinary Medicine, Blacksburg, VA, USA
- Virginia Tech Animal Cancer Care and Research Center, Virginia-Maryland College of Veterinary Medicine, Roanoke, VA, USA
| | - Nikolaos Dervisis
- Department of Small Animal Clinical Sciences, Virginia-MD College of Veterinary Medicine, Blacksburg, VA, USA
- Virginia Tech Animal Cancer Care and Research Center, Virginia-Maryland College of Veterinary Medicine, Roanoke, VA, USA
- Department of Internal Medicine, Virginia Tech Carilion School of Medicine, Roanoke, VA, USA
| | - Eli Vlaisavljevich
- Department of Biomedical Engineering and Mechanics, VA Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Shawna Klahn
- Department of Small Animal Clinical Sciences, Virginia-MD College of Veterinary Medicine, Blacksburg, VA, USA
- Virginia Tech Animal Cancer Care and Research Center, Virginia-Maryland College of Veterinary Medicine, Roanoke, VA, USA
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Antoniou A, Evripidou N, Panayiotou S, Spanoudes K, Damianou C. Treatment of canine and feline sarcoma using MR-guided focused ultrasound system. J Ultrasound 2022; 25:895-904. [PMID: 35277843 PMCID: PMC9705640 DOI: 10.1007/s40477-022-00672-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 02/27/2022] [Indexed: 11/30/2022] Open
Abstract
PURPOSE In recent years, veterinary medicine has enhanced its applications beyond traditional approaches, progressively incorporating the Focused Ultrasound (FUS) technology. This study investigated the ability of FUS to precisely ablate naturally occurring canine and feline soft tissue sarcomas (STS). METHODS Six dogs and four cats with superficial tumours were enrolled in the study. The tumours were treated with a Magnetic Resonance guided FUS (MRgFUS) robotic system featuring a single element spherically focused transducer of 2.6 MHz. The tumours were then removed by surgery and sent for hematoxylin and eosin (H&E) staining. RESULTS The MRgFUS system was capable of inflicting well-defined overlapping lesions in the tumours. The anatomical sites of the treated tumours were the neck, leg, face, back and belly. Coagulative necrosis was evidenced by histopathology assessment in 80% of cases. CONCLUSION Therefore, this technology can be a therapeutic solution for veterinary cancer and a model for advancing the knowledge on human STS.
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Affiliation(s)
- Anastasia Antoniou
- Department of Electrical Engineering, Computer Engineering, and Informatics, Cyprus University of Technology, 30 Archbishop Kyprianou Street, 3036, Limassol, Cyprus
| | - Nikolas Evripidou
- Department of Electrical Engineering, Computer Engineering, and Informatics, Cyprus University of Technology, 30 Archbishop Kyprianou Street, 3036, Limassol, Cyprus
| | - Stelios Panayiotou
- SGS Diagnostic Centre of Histopathology and Cytology Limited, 21 Thessalonikis, 3025, Limassol, Cyprus
| | - Kyriakos Spanoudes
- Department of Electrical Engineering, Computer Engineering, and Informatics, Cyprus University of Technology, 30 Archbishop Kyprianou Street, 3036, Limassol, Cyprus
| | - Christakis Damianou
- Department of Electrical Engineering, Computer Engineering, and Informatics, Cyprus University of Technology, 30 Archbishop Kyprianou Street, 3036, Limassol, Cyprus.
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Dobromylskyj M. Feline Soft Tissue Sarcomas: A Review of the Classification and Histological Grading, with Comparison to Human and Canine. Animals (Basel) 2022; 12:ani12202736. [PMID: 36290122 PMCID: PMC9597747 DOI: 10.3390/ani12202736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/07/2022] [Accepted: 10/10/2022] [Indexed: 11/07/2022] Open
Abstract
Simple Summary Soft tissue sarcomas are a common form of cancer arising in the skin and connective tissues of domestic cats. Soft tissue sarcomas encompass a group of different histological subtypes of tumours, which can behave in a range of different ways in the patient. In dogs and in humans, this group of tumours can be given a histological score (“grade”) at the time of diagnosis, which is prognostic, but there is no equivalent, well-established grading system for these tumours in cats. This review looks at soft tissue sarcomas in terms of which histological subtypes of tumour should be included in this group, and how pathologists approach their grading, comparing feline tumours with their human and canine counterparts. Abstract Soft tissue sarcomas are one of the most commonly diagnosed tumours arising in the skin and subcutis of our domestic cats, and are malignant neoplasms with a range of histological presentations and potential biological behaviours. However, unlike their canine and human counterparts, there is no well-established histological grading system for pathologists to apply to these tumours, in order to provide a more accurate and refined prognosis. The situation is further complicated by the presence of feline injection site sarcomas as an entity, as well as confusion over terminology for this group of tumours and which histological types should be included. There is also an absence of large scale studies. This review looks at these tumours in domestic cats, their classification and histological grading, with comparisons to the human and canine grading system.
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Affiliation(s)
- Melanie Dobromylskyj
- Histopathology Department, Finn Pathologists, One Eyed Lane, Weybread, Diss IP21 5TT, Norfolk, UK
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10
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Parisi F, Abramo F, Maimone M, Poli A, Millanta F. Skin Photodamage Lesions in a Bilateral Feline Auricular Primary Fibrosarcoma. Vet Sci 2022; 9:548. [PMID: 36288161 PMCID: PMC9611120 DOI: 10.3390/vetsci9100548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 09/22/2022] [Accepted: 10/03/2022] [Indexed: 11/16/2022] Open
Abstract
As with human species, recent studies also suggest a photoinduced etiopathology for non-epithelial cutaneous tumors in feline species. We report a recent case of a ten-year-old male cat with a white-hair coat and mesenchymal neoplasms of both auricles. Cytology, complete blood count (CBC), serum biochemistry and imaging examinations were performed. After surgery, the samples underwent routinary histopathology and were additionally stained with orcein. A routine analysis yielded values within a normal range and the imaging examination showed no abnormalities, suggesting that the bilateral presentation of neoplasms was primary rather than metastatic. The cytology was inconclusive, but, through histopathology, two well-differentiated fibrosarcomas were diagnosed and histopathological changes related to chronic UV exposure (such as epidermal hyperplasia, stratification disorders, keratinocyte dysplasia and an accumulation of elastotic material) were documented in the skin adjacent to the lesions. An orcein stain succeeded in highlighting elastosis. The elastic fibers lost their regular structure and orientation and appeared to be fragmented, wavy to branched and knotted. A morphometric analysis showed that the amount of elastotic material in the dermis close to the tumors was more than double compared with the more distant areas. Elastosis is considered to be a hallmark of photodamage; thus, an involvement of UV rays in the carcinogenic process of the tumors may be suspected.
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Affiliation(s)
- Francesca Parisi
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge n. 2, 56124 Pisa, Italy
| | - Francesca Abramo
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge n. 2, 56124 Pisa, Italy
| | - Marco Maimone
- Clinica Veterinaria Foce, via Eugenio Baroni, 26R, 16129 Genova, Italy
| | - Alessandro Poli
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge n. 2, 56124 Pisa, Italy
| | - Francesca Millanta
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge n. 2, 56124 Pisa, Italy
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Ludwig L, Dobromylskyj M, Wood GA, van der Weyden L. Feline Oncogenomics: What Do We Know about the Genetics of Cancer in Domestic Cats? Vet Sci 2022; 9:vetsci9100547. [PMID: 36288160 PMCID: PMC9609674 DOI: 10.3390/vetsci9100547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 09/27/2022] [Accepted: 10/01/2022] [Indexed: 11/05/2022] Open
Abstract
Simple Summary Cancer is a significant cause of suffering and death in domestic cats. In humans, an understanding of the genetics of different types of cancers has become clinically important for all aspects of patient care and forms the basis for most emerging diagnostics and therapies. The field of ‘oncogenomics’ characterises the alterations of cancer-associated genes that are found in tumours. Such a thorough understanding of the oncogenome of human tumours has only been possible due to a high-quality reference genome and an understanding of the genetic variation that can exist between people. Although a high-quality reference genome for cats has only recently been generated, investigations into understanding the genetics of feline cancers have been underway for many years, using a range of different technologies. This review summarises what is currently known of the genetics of both common and rare types of cancer in domestic cats. Drawing attention to our current understanding of the feline oncogenome will hopefully bring this topic into focus and serve as a springboard for more much-needed research into the genetics of cancer in domestic cats. Abstract Cancer is a significant cause of morbidity and mortality in domestic cats. In humans, an understanding of the oncogenome of different cancer types has proven critical and is deeply interwoven into all aspects of patient care, including diagnostics, prognostics and treatments through the application of targeted therapies. Investigations into understanding the genetics of feline cancers started with cytogenetics and was then expanded to studies at a gene-specific level, looking for mutations and expression level changes of genes that are commonly mutated in human cancers. Methylation studies have also been performed and together with a recently generated high-quality reference genome for cats, next-generation sequencing studies are starting to deliver results. This review summarises what is currently known of the genetics of both common and rare cancer types in cats, including lymphomas, mammary tumours, squamous cell carcinomas, soft tissue tumours, mast cell tumours, haemangiosarcomas, pulmonary carcinomas, pancreatic carcinomas and osteosarcomas. Shining a spotlight on our current understanding of the feline oncogenome will hopefully serve as a springboard for more much-needed research into the genetics of cancer in domestic cats.
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Affiliation(s)
- Latasha Ludwig
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada
| | | | - Geoffrey A. Wood
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Louise van der Weyden
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK
- Correspondence:
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Zajc AL, Harper A, Benoit J, Mason S. Non-injection-site soft tissue sarcoma in cats: outcome following adjuvant radiotherapy. J Feline Med Surg 2022; 24:e183-e193. [PMID: 35639367 PMCID: PMC10812266 DOI: 10.1177/1098612x221098961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVES Biological behaviour and treatment options of non-injection-site soft tissue sarcomas (nFISS) in cats are less well understood than in dogs. The aim of this retrospective study was to assess the outcomes of cats with nFISS following treatment with adjuvant radiotherapy. METHODS The medical records of cats with soft tissue sarcomas in locations not associated with, and histology reports not suggestive of, injection-site sarcomas were reviewed. All cats underwent adjuvant radiotherapy, either hypofractionated (32-36 Gy delivered in weekly 8-9 Gy fractions) or conventionally fractionated (48-54 Gy delivered in 16-18 3 Gy fractions) to microscopic disease. RESULTS In total, 18 cats were included in the study, 17 with extremity nFISS and one with facial nFISS. Nine received radiotherapy after a single surgery and nine after multiple surgeries for recurrent nFISS. Eight cats were treated with a hypofractionated protocol and 10 with a conventionally fractionated protocol. The median follow-up time was 540 days (range 51-3317 days). The tumour recurred in eight (44.4%) cats following adjuvant radiotherapy; it recurred in three (37.5%) cats following a hypofractionated protocol and in five (50%) cats following a conventionally fractionated protocol. The overall median progression-free interval (PFI) for 17/18 cats was 2748 days, while the median PFI for the 7/8 cats with recurrence was 164 days. The recurrence for one cat was reported, but the date was unknown and it was therefore censored from these data. When stratifying based on the protocol, the median PFI for hypofractionated and conventionally fractionated protocols was 164 days and 2748 days, respectively. Statistically, there was no significant difference between the two protocols (P = 0.636). CONCLUSIONS AND RELEVANCE Adjuvant radiotherapy resulted in good long-term tumour control in 12/18 cats with nFISS. Further studies in larger populations are required to assess the significance of radiation dose and fractionation on tumour control and the effect of multiple surgeries prior to initiation of radiotherapy on outcome.
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Affiliation(s)
| | | | | | - Sarah Mason
- Southfields Veterinary Specialists, Laindon, UK
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Meuten DJ, Moore FM, Donovan TA, Bertram CA, Klopfleisch R, Foster RA, Smedley RC, Dark MJ, Milovancev M, Stromberg P, Williams BH, Aubreville M, Avallone G, Bolfa P, Cullen J, Dennis MM, Goldschmidt M, Luong R, Miller AD, Miller MA, Munday JS, Roccabianca P, Salas EN, Schulman FY, Laufer-Amorim R, Asakawa MG, Craig L, Dervisis N, Esplin DG, George JW, Hauck M, Kagawa Y, Kiupel M, Linder K, Meichner K, Marconato L, Oblak ML, Santos RL, Simpson RM, Tvedten H, Whitley D. International Guidelines for Veterinary Tumor Pathology: A Call to Action. Vet Pathol 2021; 58:766-794. [PMID: 34282984 DOI: 10.1177/03009858211013712] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Standardization of tumor assessment lays the foundation for validation of grading systems, permits reproducibility of oncologic studies among investigators, and increases confidence in the significance of study results. Currently, there is minimal methodological standardization for assessing tumors in veterinary medicine, with few attempts to validate published protocols and grading schemes. The current article attempts to address these shortcomings by providing standard guidelines for tumor assessment parameters and protocols for evaluating specific tumor types. More detailed information is available in the Supplemental Files, the intention of which is 2-fold: publication as part of this commentary, but more importantly, these will be available as "living documents" on a website (www.vetcancerprotocols.org), which will be updated as new information is presented in the peer-reviewed literature. Our hope is that veterinary pathologists will agree that this initiative is needed, and will contribute to and utilize this information for routine diagnostic work and oncologic studies. Journal editors and reviewers can utilize checklists to ensure publications include sufficient detail and standardized methods of tumor assessment. To maintain the relevance of the guidelines and protocols, it is critical that the information is periodically updated and revised as new studies are published and validated with the intent of providing a repository of this information. Our hope is that this initiative (a continuation of efforts published in this journal in 2011) will facilitate collaboration and reproducibility between pathologists and institutions, increase case numbers, and strengthen clinical research findings, thus ensuring continued progress in veterinary oncologic pathology and improving patient care.
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Affiliation(s)
| | | | | | - Christof A Bertram
- Freie Universität Berlin, Berlin, Germany.,University of Veterinary Medicine, Vienna, Austria
| | | | | | | | | | | | | | | | | | | | - Pompei Bolfa
- Ross University, Basseterre, Saint Kitts and Nevis
| | - John Cullen
- North Carolina State University, Raleigh, NC, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | - Nick Dervisis
- VA-MD College of Veterinary Medicine, Blacksburg, VA, USA
| | | | | | | | | | | | - Keith Linder
- North Carolina State University, Raleigh, NC, USA
| | | | | | | | - Renato L Santos
- Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - R Mark Simpson
- Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Harold Tvedten
- Swedish University of Agricultural Sciences, Uppsala, Sweden
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Vincenti S, Betting A, Durand A, Campos M, Scanziani E, Martin SS. Total laryngectomy in a cat with a laryngeal peripheral nerve sheath tumor. Vet Surg 2021; 50:1533-1541. [PMID: 33914355 DOI: 10.1111/vsu.13646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 03/26/2021] [Accepted: 04/17/2021] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To report the surgical technique and outcome of total laryngectomy in a single clinical case. STUDY DESIGN Case report. ANIMAL A 5-year-old female spayed domestic shorthair cat. METHODS A cat presented for acute, severe respiratory distress caused by an invasive laryngeal mass. Incisional biopsy was indicative of sarcoma. Computed tomography of head, neck, and thorax was performed revealing no evidence of metastasis. A total laryngectomy and permanent tracheostomy were performed, and the cat could breathe without difficulties immediately postoperatively. Histopathology confirmed a laryngeal low-grade peripheral nerve sheath tumor (PNST). RESULTS Surgical margins were free of tumor cells. Surgical revision of the tracheostomy stoma due to obstructive granulation tissue was necessary 24 days after the initial surgery. Nine days after revision surgery, the cat was discharged from the hospital. No evidence of local recurrence or metastasis was detected on repeat computed tomography of the head, neck, and thorax at 6 months, nor on chest radiographs at 12 months postoperatively. At the time of writing (13 months postoperatively), the cat is still alive with a good quality of life. CONCLUSION Total laryngectomy with permanent tracheostomy allowed the complete removal of an obstructive laryngeal PNST and provided a good quality of life in a cat. CLINICAL SIGNIFICANCE To the authors' knowledge, this case report represents the first detailed description of the surgical procedure and clinical outcome for a total laryngectomy in a cat.
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Affiliation(s)
- Simona Vincenti
- Department of Clinical Veterinary Medicine, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Adeline Betting
- Department of Clinical Veterinary Medicine, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Alexane Durand
- Department of Clinical Veterinary Medicine, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Miguel Campos
- Department of Clinical Veterinary Medicine, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Eugenio Scanziani
- Department of Veterinary Medicine, University of Milan, Milan, Italy
| | - Sara Soto Martin
- Institute of Animal Pathology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
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Avallone G, Rasotto R, Chambers JK, Miller AD, Behling-Kelly E, Monti P, Berlato D, Valenti P, Roccabianca P. Review of Histological Grading Systems in Veterinary Medicine. Vet Pathol 2021; 58:809-828. [PMID: 33769136 DOI: 10.1177/0300985821999831] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Tumor grading is a method to quantify the putative clinical aggressiveness of a neoplasm based on specific histological features. A good grading system should be simple, easy to use, reproducible, and accurately segregate tumors into those with low versus high risk. The aim of this review is to summarize the histological and, when available, cytological grading systems applied in veterinary pathology, providing information regarding their prognostic impact, reproducibility, usefulness, and shortcomings. Most of the grading schemes used in veterinary medicine are developed for common tumor entities. Grading systems exist for soft tissue sarcoma, osteosarcoma, multilobular tumor of bone, mast cell tumor, lymphoma, mammary carcinoma, pulmonary carcinoma, urothelial carcinoma, renal cell carcinoma, prostatic carcinoma, and central nervous system tumors. The prognostic relevance of many grading schemes has been demonstrated, but for some tumor types the usefulness of grading remains controversial. Furthermore, validation studies are available only for a minority of the grading systems. Contrasting data on the prognostic power of some grading systems, lack of detailed instructions in the materials and methods in some studies, and lack of data on reproducibility and validation studies are discussed for the relevant grading systems. Awareness of the limitations of grading is necessary for pathologists and oncologists to use these systems appropriately and to drive initiatives for their improvement.
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Affiliation(s)
- Giancarlo Avallone
- Department of Veterinary medical Sciences (DIMEVET), 9296University of Bologna, Ozzano dell'Emilia, Italy
| | | | - James K Chambers
- Laboratory of Veterinary Pathology, 13143The University of Tokyo, Tokyo, Japan
| | - Andrew D Miller
- Department of Biomedical Sciences, Section of Anatomic Pathology, 43317Cornell University College of Veterinary Medicine, Ithaca, NY, USA
| | - Erica Behling-Kelly
- Department of Population Medicine and Diagnostic Sciences, Section of Clinical Pathology, 43317Cornell University College of Veterinary Medicine, Ithaca, NY, USA
| | - Paola Monti
- 170851Dick White Referrals, Six Mile Bottom, Cambridgeshire, UK
| | - Davide Berlato
- 170851AniCura Animal Oncology and Imaging Center, Hünenberg, Switzerland
| | - Paola Valenti
- 534741Clinica Veterinaria Malpensa, Samarate (VA), Italy
| | - Paola Roccabianca
- Department of Veterinary Medicine (DIMEVET), 9304University of Milano, Lodi (LO), Italy
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