Agreement Between Cytology and Histopathology for Regional Lymph Node Metastasis in Dogs With Melanocytic Neoplasms
Autor: | Brad M. Matz, Katelyn C. Hlusko, Annette N. Smith, Janet A. Grimes, Jey W. Koehler, Pete W. Christopherson, Kelsey K Cappelle |
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Rok vydání: | 2017 |
Předmět: |
Male
Pathology medicine.medical_specialty Skin Neoplasms 040301 veterinary sciences Population Metastasis 0403 veterinary science 03 medical and health sciences Dogs 0302 clinical medicine Cytology medicine Animals Dog Diseases education Melanoma Lymph node Retrospective Studies education.field_of_study General Veterinary Clinical pathology business.industry 04 agricultural and veterinary sciences medicine.disease medicine.anatomical_structure Cytopathology Lymphatic Metastasis 030220 oncology & carcinogenesis Female Mouth Neoplasms Histopathology business |
Zdroj: | Veterinary Pathology. 54:579-587 |
ISSN: | 1544-2217 0300-9858 |
Popis: | Melanocytic neoplasms are common in dogs and frequently occur within the oral cavity or in haired skin. The behavior of melanocytic neoplasms is variable and depends on tumor location, size, and histopathologic features. This study compared cytopathology and histopathology of 32 lymph nodes from 27 dogs diagnosed with melanocytic neoplasms. Agreement between the original cytology report, cytology slide review, original histopathology report, and histopathology slide review was determined for each lymph node. A subset of lymph nodes was subjected to immunohistochemistry (Melan-A) and additional histochemical stains/techniques (Prussian blue, bleach) to assist in differentiation of melanocytes and melanophages. Agreement ranged from slight to fair for each of the variables evaluated with weighted kappa (κw) or kappa (κ) analysis (original cytology vs cytology review κw= 0.24; original cytology vs original histopathology κw= 0.007; original cytology vs histopathology review κw= 0.23; cytology review vs original histopathology κw= 0.008; cytology review vs histopathology review κw= 0.006; and original histopathology vs histopathology review κ = 0.18). The diagnoses (metastatic, equivocal, or negative for metastasis) of the original report and slide review for both cytology and histopathology were not significantly correlated with survival in this population of patients. Overall, agreement between cytology and histopathology was poor even with a single clinical or anatomic pathologist performing slide review. Consensus between routine cytology and histopathology for staging of lymph nodes in patients with melanocytic neoplasms is poor and does not correlate with survival. |
Databáze: | OpenAIRE |
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