SMALL ANIMAL CYTOLOGIC DIAGNOSIS by Anne M. Barger, Amy MacNeill

By Anne M. Barger, Amy MacNeill

A robust device that may be hired in a wide selection of illness methods, cytology in small animals has won elevated reputation and medical program. Small Animal Cytologic prognosis presents clinically acceptable information regarding using cytology and exhibits while complicated diagnostic checking out might be invaluable to diagnose underlying illness processes.

The e-book discusses the pathophysiology of irritation, melanoma biology and comparisons to histology to assist readers totally understand the cytologic adjustments which can ensue with irritation and neoplasia. additionally coated are many of the barriers and benefits of cytology in comparison to histopathology.

The e-book comprises tissue-specific chapters concentrating on ailments of a selected sector, consistently compared to general tissue. each one of those chapters concludes with a variety of instances that come with info on signalment, historical past, pertinent laboratory information, specimen pictures, ultimate final result and the underlying pathology inflicting the cytologic lesions, whilst attainable. With greater than 1300 marvelous illustrations, this entire source offers abundant functional info for college kids in addition to practising veterinarians.

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Aspirate from a lytic bone lesion in a dog. The deeply eosinophilic material in the background is consistent with chondroid. The material is so thick, it is difficult to fully evaluate the nucleated cells in the sample. 48. Aspirate from a mast cell tumor in a dog. Thick aggregates of collagen bundles are present. 49. Aspirate from a mast cell tumor in a dog. Metachromatic granules are visible in the cytoplasm of the cells but also in the background. (Wright–Giemsa, 500× magnification) In order to interpret the cytology appropriately, it is important to consider the histologic appearance of the tissue and the underlying architecture.

Streams of nucleoproteinaceous debris can be identified and are often caused during slide preparation. These structures should not be confused with fungal hyphae. (Wright–Giemsa, 500× magnification) Higher magnification can include 40×, 50×, and 100× objective lenses. Often 100× is necessary to fully evaluate the sample for bacteria and smaller yeast. If using a 40× objective that is not oil immersion, remember to place a coverslip over the sample to improve the crispness of the objective. Features of individual cells will be described in each of the chapters.

44A, B). 41A–C. New methylene blue staining of cytology specimens. (A) The stain is applied to an unstained cytologic specimen. (B) A coverslip is placed on the slide. (C) Microscopic evaluation reveals reasonable nuclear staining; neutrophils and macrophages are identified in this sample. 42. FNA from a mass on a dog. Macroscopic evaluation of the slide is beneficial to identify the best area to evaluate. Some aspirates provide a very small sample. 43. FNA from a dog reveals a mixed cellular population consistent with an inflammatory response.

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