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VTI Lab 3: Cytology

Increase in size of an organ or in a select area of tissue Hypertrophy
Abnormal increase in the number of cells Hyperplasia
New growth, pathological process that results in the formation and growth of a tumor Neoplasia
Change in the type of adult cells in tissue to a form that is abnormal for that tissue Metaplasia
Abnormality of development. Something has changed in the size, shape and organization of adult cells (non-cancerous) Dysplasia
Cancer cells that divide rapidly and bear little to no resemblanace to normal cells Anaplasia
Microscopic appearance of nuclear chromatin. the coarser the chromatin the greater the chance of malignancy. Chromatin pattern
The most common yeast in dogs and cats Malassezia
How do you view an ear swab on the microscope Oil, 40x
Advantages of skin scraping Collects many cells, and is good for collecting demodex/sacroptes mange
Disadvantages of skin scraping Bad for neoplasia because you will only see secondary bacterial infections or inflammatory cells.
Advantages of impressions Easy to collect and minimum restraint is required
Disadvantages of impressions Few cells are obtained and large amounts of contamination
FNA are performed on ... lymph nodes, nodular lesions, and internal organs
what needed is used for an FNA 21 - 25 g needle and a 3-12 ml syringe
Most common problems of FNA no or few cells
Types of slide preps Linear/line, starfish, squash
Two methods of tissue biopsy Wedge and punch
Stain used NMB
Created by: jmorley3