Animal Husbandry

Diagnostic Cytology and Hematology of the Horse by Rick L. Cowell DVM MS MRCVS DACVP, Ronald D. Tyler DVM

By Rick L. Cowell DVM MS MRCVS DACVP, Ronald D. Tyler DVM PhD DACVP DABT, Fitzgerald, Potter, Mosby, Kathryn McCance

Diagnostic Cytology and Hematology of the pony is a pragmatic reference that offers universal scientific findings in an easy-to-use text/atlas layout. A basic bankruptcy discusses pattern collections and strategies, via a 'systems' procedure and chapters on particular sorts of fluid. inside of structures chapters, basic findings are confirmed after which irregular findings are awarded via classification of difficulties, resembling bacterial lesions, fungal lesions, parasitic lesions, and so on. when it comes to the attention. Algorithms on pattern reviews increase textual content discussions via guiding readers to the main most likely cytologic prognosis. moreover, a colour plate part good points sixty four illustrations for handy comparability of cellphone forms and infectious brokers. an in depth index makes this variation much more valuable as a short medical reference, excellent for assisting readers comprehend right assortment and dealing with tactics, steer clear of expensive mistakes, and make exact diagnoses.

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Extra resources for Diagnostic Cytology and Hematology of the Horse

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Most mesenchymal cells exfoliate individually, but a few cell groups may be found. Discrete round-cell tumors yield small to medium, round, individual cells. When no inflammatory cells are present, criteria of malignancy are more meaningful than when inflammatory cells are present. If many of the cells show three or fewer nuclear criteria of malignancy and no inflammatory cells are present, the lesion is most likely a malignant neoplasm. If fewer significant criteria of malignancy are present or only a few cells are affected, the cytologic preparation should be referred for interpretation or a biopsy of the lesion should be submitted for histopathologic examination.

Discrete Round-Cell Tumors Discrete round-cell tumors (Plate 7D-E) yield cytologic preparations containing individual,small to medium-sized, round cells. Lymphosarcoma and mast-cell tumor are the most common discrete round-cell tumors. Occasionally, melanomas and basal-cell tumors exfoliate as discrete round cells. Fig. 2-9 provides an algorithm to aid evaluation of aspirates containing discrete round cells. Lymphosarcoma: Cutaneous lymphosarcoma is rare in horses and usually affects adult to old animals,though any age may be affected.

Fig. 2-14 Aspirate from thyroid gland. Large amount of bluish amorphous colloid is present, along with some ruptured thyroid epithelial cells. ) Intracytoplasmic blue-black tyrosine granules occasionally are present (Fig. 2-15, A). Thyroid epithelial cells aspirated from thyroid adenomas and goitrous thyroid glands generally appear cytologically similar to epithelial cells aspirated from normal thyroid tissue. 8 A welldifferentiated thyroid carcinoma may be difficult to distinguish from a thyroid adenoma.

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