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Korytárová N, Bosch B, Klass LG, Slunsky P. Surgical management of urethral obstruction secondary to perineal liposarcoma in a dog: a case report. BMC Vet Res 2024; 20:115. [PMID: 38521902 PMCID: PMC10960436 DOI: 10.1186/s12917-024-03956-6] [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: 12/09/2023] [Accepted: 02/27/2024] [Indexed: 03/25/2024] Open
Abstract
BACKGROUND Swelling of the perineal region in male dogs is most commonly caused by a perineal hernia. Clinical signs associated with perineal hernia are constipation, tenesmus or stranguria. This case report documents a rare cause of perineal swelling created by the growth of a malignant tumour leading to urethral obstruction and subsequent stranguria. CASE PRESENTATION An 11-year-old neutered male German Shepherd was presented for swelling in the perineal region and stranguria for three days. Complete blood count and serum biochemistry were unremarkable. Ultrasound revealed a heterogeneous mass in the perineal region. Retrograde urethrography showed a severe narrowing of the urethra caudal to the pelvis. A fine-needle aspirate of the mass was highly suspicious for liposarcoma. Staging was performed by computed tomography (CT) of the thorax and abdomen. Total penile amputation in combination with pubic-ischial pelvic osteotomy, transposition of the remaining urethra through the inguinal canal, V-Y-plasty cranial to the prepuce and preputial urethrostomy were performed to remove the tumour. Histopathology confirmed a well-differentiated liposarcoma with complete histological margins. Six months after the surgery the dog was doing well and there were no signs indicating local tumour recurrence. CONCLUSIONS Wide surgical excision is generally recommended for soft tissue sarcomas, however this is sometimes not feasible for large tumours. In the case reported here, tumour resection was achieved by a combination of several surgical techniques with a good clinical outcome.
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Affiliation(s)
- Natália Korytárová
- AniCura Small Animal Specialists Augsburg, Max-Josef-Metzger-Straße 9, 86157, Augsburg, Germany.
| | - Beate Bosch
- Anicura Small Animal Specialists Ravensburg, Zuppingerstr. 10/1, 88213, Ravensburg, Germany
| | - Luise Grace Klass
- Department of Veterinary Medicine, Institute for Parasitology and Tropical Veterinary Medicine, Freie Universitaet Berlin, Berlin, Germany
| | - Pavel Slunsky
- AniCura Small Animal Specialists Augsburg, Max-Josef-Metzger-Straße 9, 86157, Augsburg, Germany
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Craig CJ, Young BD, Andries CV, Aschenbroich SA. Imaging diagnosis: CT characteristics of a retrobulbar hibernoma in a dog. Vet Radiol Ultrasound 2024; 65:145-148. [PMID: 38297959 DOI: 10.1111/vru.13332] [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: 10/18/2023] [Revised: 12/10/2023] [Accepted: 01/08/2024] [Indexed: 02/02/2024] Open
Abstract
A 12-year-old female spayed Beagle was referred for investigation of exophthalmos. CT revealed a well-defined, retrobulbar mass causing rostro-dorsal displacement of the left globe. The mass had a mildly heterogeneous precontrast soft tissue attenuation with mild heterogeneous enhancement following iohexol administration. The mass was surgically removed en bloc with an orbital exenteration. Histopathology confirmed the mass to be a hibernoma, a benign tumor of brown adipose tissue. Hibernomas have CT characteristics consistent with both benign and malignant adipose tumors and may be underrecognized by radiologists.
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Affiliation(s)
| | | | | | - Sophie A Aschenbroich
- Veterinary Diagnostic Laboratory, Department of Microbiology, Immunology and Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado, USA
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Biedak N, Graham J, Faissler D, Sato A. Computed tomographic features of an axillary liposarcoma with hepatic metastasis. Vet Radiol Ultrasound 2023; 64:E68-E72. [PMID: 37582509 DOI: 10.1111/vru.13286] [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: 04/14/2023] [Revised: 07/02/2023] [Accepted: 07/02/2023] [Indexed: 08/17/2023] Open
Abstract
A geriatric dog presented for lethargy, dyspnea, and urinary incontinence. Thoracic radiographs demonstrated a large, mixed fat, and soft tissue opaque axillary mass and a pulmonary mass. Computed tomography (CT) further characterized these masses and revealed innumerable fat-attenuating hepatic masses and cranial mediastinal lymphadenopathy. Histopathology of the axillary and hepatic masses confirmed grade two primary axillary liposarcoma with hepatic metastasis. Cytology of the pulmonary mass was consistent with a pulmonary carcinoma. This is the first published CT description of fat-attenuating metastatic hepatic liposarcoma in a dog.
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Affiliation(s)
- Nathan Biedak
- Department of Clinical Sciences at the Cummings School of Veterinary Medicine, Tufts University, North Grafton, Massachusetts, USA
| | - Julia Graham
- Department of Clinical Sciences at the Cummings School of Veterinary Medicine, Tufts University, North Grafton, Massachusetts, USA
| | - Dominik Faissler
- Department of Clinical Sciences at the Cummings School of Veterinary Medicine, Tufts University, North Grafton, Massachusetts, USA
| | - Amy Sato
- Department of Clinical Sciences at the Cummings School of Veterinary Medicine, Tufts University, North Grafton, Massachusetts, USA
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Cordella A, Saunders J, Stock E. Sternal lymphadenopathy in dogs with malignancy in different localizations: A CT retrospective study of 60 cases. Front Vet Sci 2022; 9:1019196. [PMID: 36337196 PMCID: PMC9634218 DOI: 10.3389/fvets.2022.1019196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Accepted: 10/05/2022] [Indexed: 11/25/2022] Open
Abstract
Sternal lymph nodes (SLNs) drain a multitude of regions in dogs, including the pectoral and shoulder region, the thoracic wall and mammary glands, the mediastinum, thymus, diaphragm, and the ventral abdominal wall and peritoneal cavity. Neoplastic conditions of these regions can lead to sternal lymphadenopathy. The aim of this study was to assess the most frequent localizations of the primary neoplasia and the most frequent tumor types in dogs with sternal lymphadenopathy. Computed tomographic (CT) characteristics of SLNs in dogs with confirmed neoplasia were also described. For this single-center retrospective descriptive study, dogs with sternal lymphadenopathy and cytological or histological diagnosis of neoplasia were included. Sixty dogs fulfilled the inclusion criteria: 30 (50%) with thoracic neoplasia, 19 (32%) with abdominal neoplasia, 6 (10%) with neoplasia of the front limbs and 5 (8%) with generalized neoplasia. Based on the cytological/histological diagnosis of the primary neoplasia, 31/60 (52%) dogs presented with a sarcoma, 15/60 (25%) with carcinoma, and 14/60 (23%) with round cell tumor. The presence of heterogeneous contrast enhancement was more frequent in dogs with sarcoma, while the concomitant presence of other abnormal lymph nodes was more frequent in dogs with round cell neoplasia. Tumors of different types and in different location can result in sternal lymphadenopathy in dogs. The most frequent in this study were thoracic and abdominal neoplasia, followed by neoplasia of the shoulder region. Sarcoma was the most common tumor type detected in this study, and the main CT characteristic of the SLNs in case of sarcoma was heterogeneous contrast enhancement.
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Aupperle-Lellbach H, Grassinger JM, Floren A, Törner K, Beitzinger C, Loesenbeck G, Müller T. Tumour Incidence in Dogs in Germany: a Retrospective Analysis of 109,616 Histopathological Diagnoses (2014-2019). J Comp Pathol 2022; 198:33-55. [PMID: 36116890 DOI: 10.1016/j.jcpa.2022.07.009] [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: 04/20/2022] [Revised: 05/16/2022] [Accepted: 07/30/2022] [Indexed: 10/14/2022]
Abstract
Characterization of a tumour entity is based on the precise histopathological diagnosis taking into account the signalment of the diseased animal. The present study is a comprehensive, up-to-date statistical investigation on the type, frequency and breed distribution of neoplasia in dogs in Germany. The histopathological datasets of 109,616 German canine tissue samples (2014-2019) were processed and statistically examined in retrospect. Non-neoplastic diseases were found in 38,650 samples (35.3%) and 70,966 neoplasms (64.7%) were diagnosed. The most common neoplasms were mammary tumours (21.9%), benign epithelial skin tumours (15.4%), mast cell tumour (9.7%), histiocytoma (7.0%), soft tissue sarcoma (5.8%), lipoma (5.8%), melanocytic tumours (5.2%) and odontogenic tumours (4.7%). In general, Beagles, Magyar Vizslas, Boxers, Schnauzers, Spaniels, French Bulldogs and Golden Retrievers had an increased risk of neoplasia (odds ratio 1.17-1.46; all: P ≤0.001) compared with crossbreed dogs. In particular, Boxers, Golden Retrievers, Rottweilers and Schnauzers were often affected by malignant neoplasms, whereas some breeds (eg, West Highland White Terrier, Magyar Vizsla, Chihuahua, Dachshund and Yorkshire Terrier) were frequently affected by numerous benign tumour types. Despite the known risk of haemangiosarcoma in German Shepherd Dogs, other malignant tumours were rare in this breed. Depending on the type of tumour, some purebred dog breeds can have an increased, reduced or identical risk for certain neoplasms compared with crossbreeds. Discussion of breed predispositions to tumour diseases must therefore be conducted critically and with a view to clinical relevance.
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Affiliation(s)
| | | | - Andreas Floren
- Institut für Bioinformatik, Julius-Maximilians-Universität, Würzburg, Germany; Institut für Tierökologie und Tropenbiologie, Lehrstuhl für Zoologie III (Tierökologie), Würzburg, Germany
| | | | | | | | - Tobias Müller
- Institut für Bioinformatik, Julius-Maximilians-Universität, Würzburg, Germany
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Brückner M. Urethral stenting in a dog due to compression and invasion by a liposarcoma. VETERINARY RECORD CASE REPORTS 2022. [DOI: 10.1002/vrc2.342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Michael Brückner
- Evidensia Specialistdjursjukhuset Helsingborg Helsingborg Sweden
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Crowley JD, Hosgood G, Crawford NV, Richardson JL. Computed tomographic findings, surgical management and postoperative outcomes of large intermuscular lipomas in the hindlimb of 11 dogs. Aust Vet J 2019; 98:135-139. [PMID: 31788782 DOI: 10.1111/avj.12901] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 11/05/2019] [Accepted: 11/09/2019] [Indexed: 11/27/2022]
Abstract
OBJECTIVE Lipomas are benign adipose tissue tumours of mesenchymal origin and can originate in various locations. Intermuscular lipomas in the thigh can cause substantial hindlimb expansion in the dog. We describe the computed tomography findings, surgical management and the outcomes of 11 dogs with large intermuscular lipomas of the hindlimb. DESIGN Retrospective case series. METHODS Medical records between 2009 and 2019 of dogs presenting to The Animal Hospital at Murdoch University were reviewed. Inclusion criteria included dogs with a histologically confirmed, large hindlimb lipoma that was surgically excised following preoperative computed tomography (CT) imaging. RESULTS CT with intravenous contrast revealed a well-defined, smoothly marginated, fat attenuating mass with minimal vascularity, separating the muscle bellies of the caudal hindlimb. The mass was often in close proximity to the femoral artery and vein. All lipomas were marginally excised. At surgery, some lipomas were intimately associated with the sciatic nerve and some showed infiltration of, or attachment to, neighbouring muscle that could be excised en bloc with the lipoma. Postoperative closed-suction wound drainage was used in 6 of 11 dogs. One dog required revision surgery due to partial wound dehiscence. Long-term follow-up with owners reported good postoperative function of the affected hindlimb in all dogs. One dog developed an infiltrative lipoma in the same location 22 months post-excision. CONCLUSION Preoperative CT allowed a presumptive diagnosis of intermuscular lipoma and facilitated surgical planning for marginal excision. Large intermuscular lipomas of the hindlimb can be safely excised with minimal short-term complications, good long-term functional outcome and low likelihood of recurrence.
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Affiliation(s)
- J D Crowley
- College of Veterinary Medicine, Murdoch University, Murdoch, Western Australia, 6150, Australia
| | - G Hosgood
- College of Veterinary Medicine, Murdoch University, Murdoch, Western Australia, 6150, Australia
| | - N V Crawford
- College of Veterinary Medicine, Murdoch University, Murdoch, Western Australia, 6150, Australia
| | - J L Richardson
- College of Veterinary Medicine, Murdoch University, Murdoch, Western Australia, 6150, Australia
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Barge P, Sebastián-Marcos P, Martínez M, Soler M, Gómez S, Buendía A, Agut A. Cholangiocarcinoma and hepatic myelolipoma incarcerated in a peritoneopericardial diaphragmatic hernia with pulmonary metastasis and carcinomatosis in a cat. JFMS Open Rep 2019; 5:2055116919835081. [PMID: 30834134 PMCID: PMC6393819 DOI: 10.1177/2055116919835081] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/01/2019] [Indexed: 11/24/2022] Open
Abstract
Case summary A 14-year-old female neutered Persian-cross cat was presented with a 1 week history of anorexia and lethargy. On physical examination, marked tachypnoea and dyspnoea were evident. Radiographs of the thorax revealed a globoid-shaped cardiac silhouette with heterogeneous opacity consistent with a peritoneopericardial diaphragmatic hernia (PPDH), pulmonary nodules compatible with metastasis, seven sternal segments and a small liver in the cranial abdomen with loss of serosal detail. On echocardiography, there was no evidence of cardiac tamponade. Triple-phase CT angiography demonstrated a mixed soft tissue-, mineral- and fat-attenuated liver mass arising from the left hepatic lobes that showed a pronounced heterogeneous contrast-enhancement pattern within the pericardial sac, which was producing a marked mass effect on the adjacent structures. Additionally, there was an increase in attenuation of the mesenteric fat and peritoneal effusion. The pulmonary nodules were confirmed. Imaging findings were compatible with a malignant hepatic neoplasia incarcerated in a PPDH, lung metastasis and carcinomatosis. Owing to the poor prognosis, the cat was humanely euthanased. Histopathological diagnosis was cholangiocellular carcinoma and hepatic myelolipoma, pulmonary metastasis and carcinomatosis. Relevance and novel information Hepatic cholangiocarcinoma incarcerated in a PPDH with pulmonary metastasis and carcinomatosis has not been previously described. Suspicion of a hepatic neoplasia should be raised in cases of PPDH and pulmonary nodules.
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Affiliation(s)
- Pablo Barge
- Veterinary Teaching Hospital, University of Murcia, Murcia, Spain
| | | | - Miriam Martínez
- Veterinary Teaching Hospital, University of Murcia, Murcia, Spain
| | - Marta Soler
- Veterinary Teaching Hospital, University of Murcia, Murcia, Spain.,Department of Animal Medicine and Surgery, University of Murcia, Murcia, Spain
| | - Serafín Gómez
- Veterinary Teaching Hospital, University of Murcia, Murcia, Spain.,Department of Anatomy and Comparative Pathology, Faculty of Veterinary Medicine. University of Murcia, Murcia, Spain
| | - Antonio Buendía
- Veterinary Teaching Hospital, University of Murcia, Murcia, Spain.,Department of Anatomy and Comparative Pathology, Faculty of Veterinary Medicine. University of Murcia, Murcia, Spain
| | - Amalia Agut
- Veterinary Teaching Hospital, University of Murcia, Murcia, Spain.,Department of Animal Medicine and Surgery, University of Murcia, Murcia, Spain
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Kurihara M, Bahr RJ, Green R. Liver enzyme elevation caused by a compression of infiltrative lipoma in a dog. Int J Vet Sci Med 2018; 6:127-129. [PMID: 30255090 PMCID: PMC6147384 DOI: 10.1016/j.ijvsm.2018.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 02/15/2018] [Accepted: 02/24/2018] [Indexed: 10/28/2022] Open
Affiliation(s)
- Manabu Kurihara
- Massey University Veterinary Teaching Hospital, Private Bag 11-222, Palmerston North 4442, New Zealand
| | - Robert J Bahr
- Department of Veterinary Clinical Sciences, Center for Veterinary Health Sciences, Oklahoma State University, United States
| | - Ronald Green
- Institute of Veterinary, Animal & Biomedical Sciences, Massey University, Tennent Drive, Palmerston North 4474, New Zealand
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Muñiz Moris L, Barker D, Taeymans O, Demetriou J, Llabres‐Diaz F. Sublingual infiltrative lipoma in a dog mimicking a ranula. VETERINARY RECORD CASE REPORTS 2017. [DOI: 10.1136/vetreccr-2017-000506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
| | - David Barker
- Department of SurgeryDick White ReferralsSix Mile BottomCambridgeshireUK
| | - Olivier Taeymans
- Department of Diagnostic ImagingDick White ReferralsSix Mile BottomCambridgeshireUK
| | - Jackie Demetriou
- Department of SurgeryDick White ReferralsSix Mile BottomCambridgeshireUK
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