OBJECTIVE: To evaluate a modified proportional margins approach to resection of mast cell tumors (MCTs) in dogs. DESIGN: Retrospective case series. ANIMALS: 40 dogs with subcutaneous and cutaneous MCTs undergoing curative intent surgery. PROCEDURES: Medical records were searched to identify dogs with a cytologically or histologically confirmed diagnosis of MCT that had not previously been treated surgically and that had undergone full oncological staging. In those dogs, tumors were resected with lateral margins equivalent to the widest measured diameter of the tumor and a minimum depth of 1 well-defined fascial plane deep to the tumor. Surgical margins were evaluated histologically. Cutaneous tumors were graded by use of the Patnaik system and the 2-tier system described by Kiupel et al. The prognosis for subcutaneous tumors was assessed in accordance with published recommendations. Follow-up information on dog health status was obtained through clinical examination, the dog owners, and the referring veterinarians. RESULTS: The 40 dogs had 47 tumors. Forty-one (87%) tumors were cutaneous, and 6 (13%) were subcutaneous. On the basis of the Patnaik system, 21 (51%) cutaneous tumors were considered grade I, 18 (44%) were considered grade II, and 2 (5%) were considered grade III. On the basis of the Kiupel system, 37 (90%) cutaneous tumors were considered low grade, and 4 (10%) were considered high grade. The prognosis for the 6 subcutaneous tumors was classified as likely resulting in a shorter (2) or longer (4) survival time. Forty tumors were deemed to have been excised with clear margins and 7 with incomplete margins. Local recurrence was not recorded for any dog but was suspected for 1 (2%) tumor, although not confirmed. Interval from tumor excision to follow-up ranged from 30 to 1,140 days (median, 420 days). CONCLUSIONS AND CLINICAL RELEVANCE: The modified proportional margins system resulted in satisfactory local disease control in dogs with MCTs.
OBJECTIVE: To evaluate a modified proportional margins approach to resection of mast cell tumors (MCTs) in dogs. DESIGN: Retrospective case series. ANIMALS: 40 dogs with subcutaneous and cutaneous MCTs undergoing curative intent surgery. PROCEDURES: Medical records were searched to identify dogs with a cytologically or histologically confirmed diagnosis of MCT that had not previously been treated surgically and that had undergone full oncological staging. In those dogs, tumors were resected with lateral margins equivalent to the widest measured diameter of the tumor and a minimum depth of 1 well-defined fascial plane deep to the tumor. Surgical margins were evaluated histologically. Cutaneous tumors were graded by use of the Patnaik system and the 2-tier system described by Kiupel et al. The prognosis for subcutaneous tumors was assessed in accordance with published recommendations. Follow-up information on dog health status was obtained through clinical examination, the dog owners, and the referring veterinarians. RESULTS: The 40 dogs had 47 tumors. Forty-one (87%) tumors were cutaneous, and 6 (13%) were subcutaneous. On the basis of the Patnaik system, 21 (51%) cutaneous tumors were considered grade I, 18 (44%) were considered grade II, and 2 (5%) were considered grade III. On the basis of the Kiupel system, 37 (90%) cutaneous tumors were considered low grade, and 4 (10%) were considered high grade. The prognosis for the 6 subcutaneous tumors was classified as likely resulting in a shorter (2) or longer (4) survival time. Forty tumors were deemed to have been excised with clear margins and 7 with incomplete margins. Local recurrence was not recorded for any dog but was suspected for 1 (2%) tumor, although not confirmed. Interval from tumor excision to follow-up ranged from 30 to 1,140 days (median, 420 days). CONCLUSIONS AND CLINICAL RELEVANCE: The modified proportional margins system resulted in satisfactory local disease control in dogs with MCTs.
Authors: Christopher E Lee; Stephanie S Lindley; Annette N Smith; Philippe Gaillard; Ralph A Henderson; Brad M Matz Journal: Can Vet J Date: 2021-02 Impact factor: 1.008
Authors: Andrigo Barboza de Nardi; Rodrigo Dos Santos Horta; Carlos Eduardo Fonseca-Alves; Felipe Noleto de Paiva; Laís Calazans Menescal Linhares; Bruna Fernanda Firmo; Felipe Augusto Ruiz Sueiro; Krishna Duro de Oliveira; Silvia Vanessa Lourenço; Ricardo De Francisco Strefezzi; Carlos Henrique Maciel Brunner; Marcelo Monte Mor Rangel; Paulo Cesar Jark; Jorge Luiz Costa Castro; Rodrigo Ubukata; Karen Batschinski; Renata Afonso Sobral; Natália Oyafuso da Cruz; Adriana Tomoko Nishiya; Simone Crestoni Fernandes; Simone Carvalho Dos Santos Cunha; Daniel Guimarães Gerardi; Guilherme Sellera Godoy Challoub; Luiz Roberto Biondi; Renee Laufer-Amorim; Paulo Ricardo de Oliveira Paes; Gleidice Eunice Lavalle; Rafael Ricardo Huppes; Fabrizio Grandi; Carmen Helena de Carvalho Vasconcellos; Denner Santos Dos Anjos; Ângela Cristina Malheiros Luzo; Julia Maria Matera; Miluse Vozdova; Maria Lucia Zaidan Dagli Journal: Cells Date: 2022-02-10 Impact factor: 6.600
Authors: Pamela D Jones; Justine E Campbell; Graham Brown; Chad M Johannes; Paul Reddell Journal: J Vet Intern Med Date: 2020-12-22 Impact factor: 3.175
Authors: Thomas R De Ridder; Justine E Campbell; Cheryl Burke-Schwarz; David Clegg; Emily L Elliot; Samuel Geller; Wendy Kozak; Stephen T Pittenger; Jennifer B Pruitt; Jocelyn Riehl; Julie White; Melissa L Wiest; Chad M Johannes; John Morton; Pamela D Jones; Peter F Schmidt; Victoria Gordon; Paul Reddell Journal: J Vet Intern Med Date: 2020-06-16 Impact factor: 3.175