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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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Agnoli C, Rimondi S, Ghisoni G, Guerra D, Tumbarello M, Perfetti S, Tirolo A, Marconato L. Spotlight on capecitabine for the treatment of unresectable or metastatic carcinoma of various origin: A retrospective study of 25 dogs. Vet Comp Oncol 2024; 22:42-48. [PMID: 38037870 DOI: 10.1111/vco.12945] [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: 03/24/2023] [Revised: 10/31/2023] [Accepted: 11/20/2023] [Indexed: 12/02/2023]
Abstract
Capecitabine, the oral prodrug of 5-fluorouracil, is indicated in people to treat various malignant epithelial cancers. In dogs, capecitabine has not been extensively evaluated. The aim of this retrospective study was to investigate toxicity and preliminary efficacy of single agent capecitabine in dogs with advanced malignant epithelial cancers of any site, for which no effective therapy existed, conventional treatment failed or was declined. Capecitabine was administered orally at 750 mg/m2 from day 1 to 14, followed by 1-week rest period, given as 3-week cycles. Safety evaluation was performed after 2 cycles, and every 2-3 cycles thereafter. Tumour response was determined every 2-3 cycles. Twenty-five dogs with hepatocellular carcinoma (n = 6), lung papillary carcinoma (n = 4), anal sac adenocarcinoma (n = 3), colic adenocarcinoma (n = 2), and other individually represented epithelial cancers (n = 10) were included. Dogs received a median of 4 cycles (range, 2-43) for a median of 84 days (range, 42-913). Toxicity occurred in 17 (68.0%) dogs; the most frequent adverse events were gastrointestinal, with the majority being self-resolving and of mild grade. Of the 22 dogs with macroscopic disease, 3 (13.6%) achieved partial remission, 16 (72.7%) were stable and 3 (13.6%) progressed; overall clinical benefit rate was 86.4%. Median progression-free interval was 93 days (95% CI 42-154; range, 1-521) and median tumour-specific survival was 273 days (95% CI 116-482; range 45-913). These findings suggest that capecitabine is an attractive option for the treatment of several types of carcinomas in dogs. Prospective studies are warranted to optimize the scheduling of capecitabine and confirm its efficacy.
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Affiliation(s)
- Chiara Agnoli
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Sofia Rimondi
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Giulia Ghisoni
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Dina Guerra
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Michele Tumbarello
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Simone Perfetti
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Alessandro Tirolo
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Laura Marconato
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
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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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Noh D, Choi W, Son W, Lee M, Park S, Lee K. Liposarcoma of the spermatic cord in a Toy Poodle. J Vet Med Sci 2017; 79:2026-2029. [PMID: 29142149 PMCID: PMC5745184 DOI: 10.1292/jvms.17-0357] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Liposarcoma of the spermatic cord is extremely rare in dogs and humans. This report describes the clinical signs, typical diagnostic imaging including ultrasound and computed tomography, and treatment of a liposarcoma of the spermatic cord of a Toy Poodle confirmed by histological examination after a surgical procedure. This case highlights the importance of preoperative diagnostic imaging and histopathological examination in dogs with an inguinal or scrotal mass.
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Affiliation(s)
- Daji Noh
- College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Korea
| | - Wooson Choi
- Two Man Veterinary Hospital, Daegu 42770, Korea
| | - Woochan Son
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea
| | - Manhee Lee
- College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Korea
| | - Seungchun Park
- College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Korea
| | - Kija Lee
- College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Korea
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Doria-Torra G, Martínez J, Domingo M, Vidaña B, Isidoro-Ayza M, Casanova MI, Vidal E. Liposarcoma in animals: literature review and case report in a domestic pig (Sus scrofa). J Vet Diagn Invest 2015; 27:196-202. [PMID: 25613042 DOI: 10.1177/1040638714567190] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Liposarcomas are malignant tumors of adipocytes. The current report describes a liposarcoma in a 2.5-year-old, mixed-breed commercial sow that was detected during meat inspection. On gross examination, a firm, whitish, multinodular, 20 cm ×10 cm mass was observed in the perirenal area along with smaller nodules multifocally scattered within the renal parenchyma. Histological examination revealed an anaplastic sarcoma with clear intracytoplasmic lipidic vacuoles that were positive for Sudan black staining. Most of the cells were also positive for S100 and vimentin immunohistochemistry. Based on these results, a diagnosis of a perirenal liposarcoma was established. To the authors' knowledge, no previous reports of liposarcomas in pigs have been published. This report also includes a review of the literature published on animal liposarcomas.
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Affiliation(s)
- Georgina Doria-Torra
- Departament de Sanitat i Anatomia Animals (Doria-Torra, Martínez, Domingo, Vidaña, Isidoro-Ayza, Casanova), Bellaterra, Barcelona, SpainServei de Diagnòstic de Patologia Veterinària (Doria-Torra, Martínez, Domingo, Isidoro-Ayza, Casanova), Bellaterra, Barcelona, SpainUniversitat Autònoma de Barcelona (UAB), Bellaterra, Barcelona, SpainCentre de Recerca en Sanitat Animal, UAB-IRTA, Bellaterra, Barcelona, Spain (Martínez, Domingo, Vidaña, Vidal)
| | - Jorge Martínez
- Departament de Sanitat i Anatomia Animals (Doria-Torra, Martínez, Domingo, Vidaña, Isidoro-Ayza, Casanova), Bellaterra, Barcelona, SpainServei de Diagnòstic de Patologia Veterinària (Doria-Torra, Martínez, Domingo, Isidoro-Ayza, Casanova), Bellaterra, Barcelona, SpainUniversitat Autònoma de Barcelona (UAB), Bellaterra, Barcelona, SpainCentre de Recerca en Sanitat Animal, UAB-IRTA, Bellaterra, Barcelona, Spain (Martínez, Domingo, Vidaña, Vidal)
| | - Mariano Domingo
- Departament de Sanitat i Anatomia Animals (Doria-Torra, Martínez, Domingo, Vidaña, Isidoro-Ayza, Casanova), Bellaterra, Barcelona, SpainServei de Diagnòstic de Patologia Veterinària (Doria-Torra, Martínez, Domingo, Isidoro-Ayza, Casanova), Bellaterra, Barcelona, SpainUniversitat Autònoma de Barcelona (UAB), Bellaterra, Barcelona, SpainCentre de Recerca en Sanitat Animal, UAB-IRTA, Bellaterra, Barcelona, Spain (Martínez, Domingo, Vidaña, Vidal)
| | - Beatriz Vidaña
- Departament de Sanitat i Anatomia Animals (Doria-Torra, Martínez, Domingo, Vidaña, Isidoro-Ayza, Casanova), Bellaterra, Barcelona, SpainServei de Diagnòstic de Patologia Veterinària (Doria-Torra, Martínez, Domingo, Isidoro-Ayza, Casanova), Bellaterra, Barcelona, SpainUniversitat Autònoma de Barcelona (UAB), Bellaterra, Barcelona, SpainCentre de Recerca en Sanitat Animal, UAB-IRTA, Bellaterra, Barcelona, Spain (Martínez, Domingo, Vidaña, Vidal)
| | - Marcos Isidoro-Ayza
- Departament de Sanitat i Anatomia Animals (Doria-Torra, Martínez, Domingo, Vidaña, Isidoro-Ayza, Casanova), Bellaterra, Barcelona, SpainServei de Diagnòstic de Patologia Veterinària (Doria-Torra, Martínez, Domingo, Isidoro-Ayza, Casanova), Bellaterra, Barcelona, SpainUniversitat Autònoma de Barcelona (UAB), Bellaterra, Barcelona, SpainCentre de Recerca en Sanitat Animal, UAB-IRTA, Bellaterra, Barcelona, Spain (Martínez, Domingo, Vidaña, Vidal)
| | - María Isabel Casanova
- Departament de Sanitat i Anatomia Animals (Doria-Torra, Martínez, Domingo, Vidaña, Isidoro-Ayza, Casanova), Bellaterra, Barcelona, SpainServei de Diagnòstic de Patologia Veterinària (Doria-Torra, Martínez, Domingo, Isidoro-Ayza, Casanova), Bellaterra, Barcelona, SpainUniversitat Autònoma de Barcelona (UAB), Bellaterra, Barcelona, SpainCentre de Recerca en Sanitat Animal, UAB-IRTA, Bellaterra, Barcelona, Spain (Martínez, Domingo, Vidaña, Vidal)
| | - Enric Vidal
- Departament de Sanitat i Anatomia Animals (Doria-Torra, Martínez, Domingo, Vidaña, Isidoro-Ayza, Casanova), Bellaterra, Barcelona, SpainServei de Diagnòstic de Patologia Veterinària (Doria-Torra, Martínez, Domingo, Isidoro-Ayza, Casanova), Bellaterra, Barcelona, SpainUniversitat Autònoma de Barcelona (UAB), Bellaterra, Barcelona, SpainCentre de Recerca en Sanitat Animal, UAB-IRTA, Bellaterra, Barcelona, Spain (Martínez, Domingo, Vidaña, Vidal)
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Schmiedt CW, Saba CF, Freeman KG, Edwards GL. Assessment of plasma uracil-to-dihydrouracil concentration ratio as an indicator of dihydropyrimidine dehydrogenase activity in clinically normal dogs and dogs with neoplasia or renal insufficiency. Am J Vet Res 2011; 73:119-24. [PMID: 22204297 DOI: 10.2460/ajvr.73.1.119] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To determine and compare the ratio of uracil (U) to dihydrouracil (UH(2)) concentrations in plasma as an indicator of dihydropyrimidine dehydrogenase activity in clinically normal dogs and dogs with neoplasia or renal insufficiency. ANIMALS 101 client- and shelter-owned dogs. PROCEDURES Study dogs included 74 clinically normal dogs, 17 dogs with neoplasia, and 10 dogs with renal insufficiency. For each dog, a blood sample was collected into an EDTA-containing tube; plasma U and UH(2) concentrations were determined via UV high-performance liquid chromatography, and the U:UH(2) concentration ratio was calculated. Data were compared among dogs grouped on the basis of sex, clinical group assignment, reproductive status (sexually intact, spayed, or castrated), and age. RESULTS Mean ± SEM U:UH(2) concentration ratio for all dogs was 1.55 ± 0.08 (median, 1.38; range, 0.4 to 7.14). In 14 (13.9%) dogs, the U:UH(2) concentration ratio was considered abnormal (ie, > 2). Overall, mean ratio for sexually intact dogs was significantly higher than that for neutered dogs; a similar difference was apparent among males but not females. Dogs with ratios > 2 and dogs with ratios ≤ 2 did not differ significantly with regard to sex, clinical group, reproductive status, or age. CONCLUSIONS AND CLINICAL RELEVANCE Determination of the U:UH(2) concentration ratio was easy to perform. Ratios were variable among dogs, possibly suggesting differences in dihydropyrimidine dehydrogenase activity. However, studies correlating U:UH(2) concentration ratio and fluoropyrimidine antimetabolite drug tolerability are required to further evaluate the test's validity and its appropriate use in dogs.
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Affiliation(s)
- Chad W Schmiedt
- Department of Small Animal Medicine, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA.
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