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Biserni R, Bibbiani L, Mandara MT, Balducci F, Amey J, Bernardini M. Malignant Nerve Sheath Tumor of the Hypoglossal Nerve in a Maltese Dog. J Am Anim Hosp Assoc 2022; 58:137-140. [PMID: 35576396 DOI: 10.5326/jaaha-ms-7243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/22/2021] [Indexed: 11/11/2022]
Abstract
A 4 yr old male Maltese dog presented with a 1 wk history of intermittent neck pain and progressive difficulty walking. Neurologic evaluation was consistent with a left-sided brainstem lesion. On oral examination, left lingual hemiatrophy was evident suggesting hypoglossal nerve involvement. A dumbbell-shaped extra-axial mass in the left side of the caudal fossa extending extracranially through the hypoglossal canal was detected by MRI. At postmortem histologic examination, the hypoglossal nerve was diffusely infiltrated by fusiform neoplastic cells arranged in Antoni A and Antoni B patterns. This is the first description of a malignant nerve sheath tumor selectively involving the hypoglossal nerve in a dog.
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Affiliation(s)
- Roberta Biserni
- From AniCura I Portoni Rossi Veterinary Hospital, Zola Predosa, Italy (R.B., L.B., F.B., J.A., M.B.)
| | - Leonardo Bibbiani
- From AniCura I Portoni Rossi Veterinary Hospital, Zola Predosa, Italy (R.B., L.B., F.B., J.A., M.B.)
| | | | - Federica Balducci
- From AniCura I Portoni Rossi Veterinary Hospital, Zola Predosa, Italy (R.B., L.B., F.B., J.A., M.B.)
| | - Jack Amey
- From AniCura I Portoni Rossi Veterinary Hospital, Zola Predosa, Italy (R.B., L.B., F.B., J.A., M.B.)
| | - Marco Bernardini
- From AniCura I Portoni Rossi Veterinary Hospital, Zola Predosa, Italy (R.B., L.B., F.B., J.A., M.B.).,From Universita' degli Studi di Padova, Legnaro, Italy (M.B.)
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Dolera M, Malfassi L, Marcarini S, Mazza G, Carrara N, Pavesi S, Sala M, Finesso S, Urso G. High dose hypofractionated frameless volumetric modulated arc radiotherapy is a feasible method for treating canine trigeminal nerve sheath tumors. Vet Radiol Ultrasound 2018; 59:624-631. [PMID: 29885013 DOI: 10.1111/vru.12637] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 10/18/2017] [Accepted: 10/19/2017] [Indexed: 12/31/2022] Open
Abstract
The aim of this prospective pilot study was to evaluate the feasibility and effectiveness of curative intent high dose hypofractionated frameless volumetric modulated arc radiotherapy for treatment of canine trigeminal peripheral nerve sheath tumors. Client-owned dogs with a presumptive imaging-based diagnosis of trigeminal peripheral nerve sheath tumor were recruited for the study during the period of February 2010 to December 2013. Seven dogs were enrolled and treated with high dose hypofractionated volumetric modulated arc radiotherapy delivered by a 6 MV linear accelerator equipped with a micro-multileaf beam collimator. The plans were computed using a Monte Carlo algorithm with a prescription dose of 37 Gy delivered in five fractions on alternate days. Overall survival was estimated using a Kaplan-Meier curve analysis. Magnetic resonance imaging (MRI) follow-up examinations revealed complete response in one dog, partial response in four dogs, and stable disease in two dogs. Median overall survival was 952 days with a 95% confidence interval of 543-1361 days. Volumetric modulated arc radiotherapy was demonstrated to be feasible and effective for trigeminal peripheral nerve sheath tumor treatment in this sample of dogs. The technique required few sedations and spared organs at risk. Even though larger studies are required, these preliminary results supported the use of high dose hypofractionated volumetric modulated arc radiotherapy as an alternative to other treatment modalities.
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Affiliation(s)
- Mario Dolera
- La Cittadina Fondazione Studi e Ricerche Veterinarie, Lodi, Italy
| | - Luca Malfassi
- La Cittadina Fondazione Studi e Ricerche Veterinarie, Lodi, Italy
| | - Silvia Marcarini
- La Cittadina Fondazione Studi e Ricerche Veterinarie, Lodi, Italy
| | - Giovanni Mazza
- La Cittadina Fondazione Studi e Ricerche Veterinarie, Lodi, Italy
| | - Nancy Carrara
- La Cittadina Fondazione Studi e Ricerche Veterinarie, Lodi, Italy
| | - Simone Pavesi
- La Cittadina Fondazione Studi e Ricerche Veterinarie, Lodi, Italy
| | - Massimo Sala
- La Cittadina Fondazione Studi e Ricerche Veterinarie, Lodi, Italy
| | - Sara Finesso
- La Cittadina Fondazione Studi e Ricerche Veterinarie, Lodi, Italy
| | - Gaetano Urso
- Azienda Ospedaliera della Provincia di Lodi, Lodi, Italy
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Dolera M, Malfassi L, Carrara N, Finesso S, Marcarini S, Mazza G, Pavesi S, Sala M, Urso G. Volumetric Modulated Arc (Radio) Therapy in Pets Treatment: The "La Cittadina Fondazione" Experience. Cancers (Basel) 2018; 10:E30. [PMID: 29364837 PMCID: PMC5836062 DOI: 10.3390/cancers10020030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 12/29/2017] [Accepted: 01/16/2018] [Indexed: 12/31/2022] Open
Abstract
Volumetric Modulated Arc Therapy (VMAT) is a modern technique, widely used in human radiotherapy, which allows a high dose to be delivered to tumor volumes and low doses to the surrounding organs at risk (OAR). Veterinary clinics takes advantage of this feature due to the small target volumes and distances between the target and the OAR. Sparing the OAR permits dose escalation, and hypofractionation regimens reduce the number of treatment sessions with a simpler manageability in the veterinary field. Multimodal volumes definition is mandatory for the small volumes involved and a positioning device precisely reproducible with a setup confirmation is needed before each session for avoiding missing the target. Additionally, the elaborate treatment plan must pursue hard constraints and objectives, and its feasibility must be evaluated with a per patient quality control. The aim of this work is to report results with regard to brain meningiomas and gliomas, trigeminal nerve tumors, brachial plexus tumors, adrenal tumors with vascular invasion and rabbit thymomas, in comparison with literature to determine if VMAT is a safe and viable alternative to surgery or chemotherapy alone, or as an adjuvant therapy in pets.
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Affiliation(s)
- Mario Dolera
- La Cittadina Fondazione Studi e Ricerche Veterinarie, 26014 Romanengo, Italy.
| | - Luca Malfassi
- La Cittadina Fondazione Studi e Ricerche Veterinarie, 26014 Romanengo, Italy.
| | - Nancy Carrara
- La Cittadina Fondazione Studi e Ricerche Veterinarie, 26014 Romanengo, Italy.
| | - Sara Finesso
- La Cittadina Fondazione Studi e Ricerche Veterinarie, 26014 Romanengo, Italy.
| | - Silvia Marcarini
- La Cittadina Fondazione Studi e Ricerche Veterinarie, 26014 Romanengo, Italy.
| | - Giovanni Mazza
- La Cittadina Fondazione Studi e Ricerche Veterinarie, 26014 Romanengo, Italy.
| | - Simone Pavesi
- La Cittadina Fondazione Studi e Ricerche Veterinarie, 26014 Romanengo, Italy.
| | - Massimo Sala
- La Cittadina Fondazione Studi e Ricerche Veterinarie, 26014 Romanengo, Italy.
| | - Gaetano Urso
- Azienda Socio Sanitaria Territoriale della provincia di Lodi, 26841 Casalpusterlengo, Italy.
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Dolera M, Malfassi L, Bianchi C, Carrara N, Finesso S, Marcarini S, Mazza G, Pavesi S, Sala M, Urso G. Frameless stereotactic volumetric modulated arc radiotherapy of brachial plexus tumours in dogs: 10 cases. Br J Radiol 2016; 90:20160617. [PMID: 27885855 DOI: 10.1259/bjr.20160617] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
OBJECTIVE Treatment of canine peripheral nerve sheath tumours (PNSTs) is challenging and prognosis after surgical resection is considered poor. The aim of this study was to evaluate the feasibility and effectiveness of stereotactic radiotherapy (RT) of these tumours. METHODS 10 dogs with clinical symptoms and MRI findings consistent with PNSTs of the brachial plexus, branches and nerve roots were treated with linear accelerator-based volumetric-modulated arc radiotherapy (VMAT) with a dose of 35 Gy/5 fractions. Clinical and MRI follow-up examinations were planned and radiotoxicity and survival times were investigated. RESULTS Tumours involved the plexus and proximal nerves in three dogs, the plexus, proximal nerves and nerve roots in five dogs and the nerve roots and proximal nerves in two dogs. Partial response and partial or complete reductions of neurological deficits were observed in all the treated dogs. Local recurrence was observed in 9/10 of treated dogs. No symptom directly referable to radiotoxicity was observed. Mean overall survival of 371 ± 30 days [95% confidence interval (CI) of (315-427)] and mean progression-free survival of 240 ± 30 days (95% CI of 188-291) from this work are comparable with surgical literature data regarding the plexus and proximal nerve localization, but are superior in comparison with nerve root localization. CONCLUSION VMAT can be a safe and viable alternative to surgery in cases of canine brachial plexus PNSTs involving the proximal nerves and nerve roots. Advances in knowledge: To our knowledge, this is the first prospective observational clinical study regarding VMAT stereotactic RT treatment for canine brachial plexus PNSTs and suggests that VMAT may achieve at least similar clinical outcome than surgery in a safer way.
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Affiliation(s)
- Mario Dolera
- 1 La Cittadina Fondazione Studi e Ricerche Veterinarie, Romanengo, Italy
| | - Luca Malfassi
- 1 La Cittadina Fondazione Studi e Ricerche Veterinarie, Romanengo, Italy
| | - Cristina Bianchi
- 1 La Cittadina Fondazione Studi e Ricerche Veterinarie, Romanengo, Italy
| | - Nancy Carrara
- 1 La Cittadina Fondazione Studi e Ricerche Veterinarie, Romanengo, Italy
| | - Sara Finesso
- 1 La Cittadina Fondazione Studi e Ricerche Veterinarie, Romanengo, Italy
| | - Silvia Marcarini
- 1 La Cittadina Fondazione Studi e Ricerche Veterinarie, Romanengo, Italy
| | - Giovanni Mazza
- 1 La Cittadina Fondazione Studi e Ricerche Veterinarie, Romanengo, Italy
| | - Simone Pavesi
- 1 La Cittadina Fondazione Studi e Ricerche Veterinarie, Romanengo, Italy
| | - Massimo Sala
- 1 La Cittadina Fondazione Studi e Ricerche Veterinarie, Romanengo, Italy
| | - Gaetano Urso
- 1 La Cittadina Fondazione Studi e Ricerche Veterinarie, Romanengo, Italy.,2 Radiotherapy Department Azienda Socio Sanitaria Territoriale di Lodi, Lodi, Italy
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Yap F, Pratschke K. Peripheral Nerve Sheath Tumor of the Vagus Nerve in a Dog. J Am Anim Hosp Assoc 2016; 52:57-62. [DOI: 10.5326/jaaha-ms-6249] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A peripheral nerve sheath tumor was diagnosed in a female, neutered Labrador retriever with a 6 mo history of coughing, retching, ptyalism, and left-sided Horner's syndrome. Computed tomography scan of the neck revealed a mass lesion between the carotid artery and esophagus in the mid-cervical region. Exploratory surgery was performed and an 18 cm section of thickened vagus nerve was excised. Histopathological findings and immunochemistry staining confirmed a malignant peripheral nerve sheath tumor. The tumor showed microscopic signs of malignancy, but there were no macroscopic signs of local extension or distant metastasis. This report documents a peripheral nerve sheath tumor of rare origin in dogs.
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Affiliation(s)
- Fui Yap
- From the Small Animal Hospital, University of Glasgow, Glasgow, United Kingdom
| | - Kathryn Pratschke
- From the Small Animal Hospital, University of Glasgow, Glasgow, United Kingdom
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Beltran E, Grundon R, Stewart J, Biggi M, Holloway A, Freeman C. IMAGING DIAGNOSIS - UNILATERAL TRIGEMINAL NEURITIS MIMICKING PERIPHERAL NERVE SHEATH TUMOR IN A HORSE. Vet Radiol Ultrasound 2015; 57:E1-4. [DOI: 10.1111/vru.12272] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2015] [Accepted: 04/28/2015] [Indexed: 11/27/2022] Open
Affiliation(s)
- Elsa Beltran
- Royal Veterinary College; University of London; Hawshead Lane, North Mymms Hatfield Herts AL9 7TA UK
| | | | | | - Marianna Biggi
- Royal Veterinary College; University of London; Hawshead Lane, North Mymms Hatfield Herts AL9 7TA UK
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