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1.
Vet Comp Oncol ; 22(1): 115-124, 2024 Mar.
Article in English | MEDLINE | ID: mdl-38156420

ABSTRACT

Large granular lymphocyte lymphoma (LGLL) is a rare form of lymphoma in dogs. Limited information exists regarding presentation, treatment response, and outcome. The aim of this single-institute, retrospective study was to characterise clinical presentation, biologic behaviour, outcomes, and prognostic factors for dogs with LGLL. Cytologic review was also performed. Sixty-five dogs were included. The most common breed was the Labrador retriever (29.2%), and the most common presenting signs were lethargy (60.0%) and hyporexia (55.4%). The most common primary anatomic forms were hepatosplenic (32.8%) and gastrointestinal (20.7%). Twenty dogs (30.8%) had peripheral blood or bone marrow involvement. Thirty-two dogs were treated with maximum tolerated dose chemotherapy (MTDC) with a response documented in 74.1% of dogs. Dogs ≥7 years, and those with neutropenia or thrombocytopenia at diagnosis had the reduced likelihood of response to treatment. For dogs treated with MTDC median progression-free interval (PFI) was 17 days (range, 0-481), the median overall survival time (OST) 28 days (range, 3-421), and the 6-month and 1-year survival rates were 9.4% and 3.1%, respectively. On multivariable analysis, monocytosis and peripheral blood involvement were significantly associated with shorter PFI and OST. Long-term survival (≥100 days) was significantly associated with intermediate lymphocyte size on cytology. Dogs with LGLL have moderate response rates to chemotherapy but poor overall survival. Additional studies are needed to further evaluate prognostic factors and guide optimum treatment recommendations.


Subject(s)
Dog Diseases , Lymphoma , Neutropenia , Thrombocytopenia , Dogs , Animals , Retrospective Studies , Dog Diseases/diagnosis , Dog Diseases/drug therapy , Lymphoma/veterinary , Thrombocytopenia/veterinary , Neutropenia/veterinary
3.
J Vet Intern Med ; 36(3): 919-926, 2022 May.
Article in English | MEDLINE | ID: mdl-35319111

ABSTRACT

BACKGROUND: Limited data exist on the diagnosis and successful medical management of suspected pancreatic abscessation, and the appropriate terminology of this condition. HYPOTHESIS/OBJECTIVES: To describe the diagnosis and management of pancreatic fluid accumulations in dogs where pancreatic fluid cytology results were available, to describe those medically and surgically managed at the same institution, and reconsider the terminology describing acute pancreatitis with pancreatic fluid accumulation. ANIMALS: Fifteen dogs treated for suspected pancreatic abscessation at a university teaching hospital between January 2010 and March 2020. METHODS: Retrospective descriptive study. RESULTS: Ultrasonographic findings described pancreatic fluid accumulations as hypoechoic in 10/15 and anechoic in 2/15 cases, ranging between 1.6 and 7 cm in diameter (median, 3.5 cm). No complications were documented after ultrasound guided fine-needle aspiration. Cytologically, all samples revealed a predominantly neutrophilic inflammation. 11/15 samples yielded a negative culture (9/11 received antimicrobials before sampling) and in 4 cases culture was positive. 7/15 were initially managed surgically including all 4 infected cases. 4/7 surgically managed cases were discharged, including 2 infected cases. The remaining 3/7 surgically managed cases were euthanized due poor quality of life. 8/15 cases were managed medically; 7/8 were discharged, 1 died. 3/7 then represented, and underwent successful surgical intervention after recrudescence of clinical signs, and all were discharged. The remaining 4 medically managed cases did not require further therapeutic intervention, with no clinical deterioration on reassessment. CONCLUSIONS AND CLINICAL IMPORTANCE: Medical management is a viable treatment option for some dogs with pancreatic fluid accumulation, or as a prequel to surgical management. Subclassifications of pancreatic fluid accumulations using diagnostic findings could enable more tailored management approaches and accurate prognostication.


Subject(s)
Dog Diseases , Pancreatitis , Acute Disease , Animals , Dog Diseases/diagnostic imaging , Dog Diseases/surgery , Dogs , Humans , Pancreas/diagnostic imaging , Pancreas/surgery , Pancreatitis/surgery , Pancreatitis/veterinary , Quality of Life , Retrospective Studies
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