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  • Title: White blood cell count is a poor predictor of severity of disease in the diagnosis of appendicitis.
    Author: Coleman C, Thompson JE, Bennion RS, Schmit PJ.
    Journal: Am Surg; 1998 Oct; 64(10):983-5. PubMed ID: 9764707.
    Abstract:
    The white blood cell (WBC) count is considered to be a useful test in the diagnosis of appendicitis. The purpose of this study was to examine the clinical features of patients with normal WBC appendicitis and also to determine whether a higher WBC count correlates with a more advanced stage of appendicitis. Patients with pathologically confirmed appendicitis from January 1989 to December 1994 were included in the study (n = 1919). The age, gender, temperature, length of hospital stay, and severity of disease (1 = acute appendicitis; 2 = gangrenous appendicitis; 3 = perforated appendicitis with abscess formation; 4 = appendicitis with diffuse peritonitis) were compared for patients with a normal WBC count (range, 3.8-10.9) versus those who had an elevated WBC count. A normal WBC count was seen in 11 per cent of patients (n = 209). There was no difference in age, temperature, gender, or severity of disease in the patients with a normal WBC count compared with those with an elevated WBC count (P > 0.05). The severity of disease of patients with a normal WBC count were: 1 = 58 per cent; 2 = 13 per cent; 3 = 7 per cent; and 4 = 22 per cent. For patients with an elevated WBC count the scores were: 1 = 57 per cent; 2 = 17 per cent; 3 = 13 per cent; and 4 = 14 per cent. The proportion of gangrenous and perforated appendicitis in the patients with a normal WBC count is the same as in the patients with an elevated WBC count.
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