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Wheeless' Textbook of Orthopaedics
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WBC Differential


- See Neutrophils/Left Shift - Lymphocytes: (24-44%) - Increased: Measles, German Measles, Mumps, Whooping Cough, Small pox, Chicken pox, Influenza, Hepatitis, Infectious Mononucleosis, Acute Infectious Lymphocytosis in children, Virtually any Viral Infection, Acute and Chronic Lymphocytic Leukemias; - Decreased: After Stress, Burns, Trauma, Nl variation, Uremia; - Monocytes (3-7%) - Increased: Bacterial infection (TB, SBE, Brucellosis, Typhoid, Recovery from Acute Infection), Protozoal infection, Infectious Mononucleosis, Leukemia, Hodgkin's dz, Ulcerative colitis, Regional Enteritis; - Mast Cells: - Mastocytosis - Eosinophils: (1-3%) - Increased: - Allergy: Asthma, Hizes, Hay Fever, Angioneurotic edema; - Parasites, Aspergillosis, Coccidioidomycosis; - Skin dz: Dermatitis herp., mycosis fungoides, contact dermatitis; - Malignancy: CML, Hodgkin's, Mycosis fungoides, Sezary, ALL - Medications - Asthma - Addison's dz - Collagen Vascular dz - Pulmonary dz w/ Infiltrates; - Decreased: - Steroid Rx - ACTH - Infection, Trauma, Burns - Cushing's syndrome; - Basophils: (0-1%) - Increased: Chronic Myeloid Leukemia, rarely in Recovery from Infection, and from Hypothyroidism - Decreased: Acute Rheumatic Fever, Lobar Pneumonia, after Steroid Rx, Thyrotoxicosis, Stress; -----------------------------------



Original Text by Clifford R. Wheeless, III, MD.