Journal List > J Korean Soc Transplant > v.23(3) > 1034294

Lee, Lee, Ju, Kim, Huh, Yoon, Joo, Kim, Kim, and Kim: Clinical Characteristics of Acute Appendicitis in Kidney Transplant Recipients

Abstract

Background:

Appendicitis is a common surgical disease. There are many problems for the early diagnosis of acute appendicitis in kidney transplant patients; differential diagnosis for acute rejection, limitation in imaging study, problems of immunosuppressant and non-characteristic symptoms.

Methods:

We reviewed medical records and transplant database of 2,947 renal transplant patients between April, 1979 and September, 2009 retrospectively. Patient's characteristics, diagnostic methods for appendicitis and operative/postoperative progresses were analyzed.

Results:

Of the 2,947 renal transplant patients, there were 15 (0.51%, 13 males and 2 females) acute appendicitis patients. Mean age at the diagnosis of appendicitis was 37.2±10.1 years. Fourteen (93.3%) patients suffered from prodromal symptom, such as abdominal pain, direct or rebound tenderness, nausea and vomiting. There were 12 (80%) patients with leukocytosis (WBC count >10,000/μ L). Computed tomography scans were performed in 5 (33.4%) patients for diagnosis. Laparoscopic appendectomies were applied for 8 (53.4%) patients. In pathologic diagnosis, 2 cases were reported as 'non pathologic diagnosis' complications occurred in 2 patients as remnant appendicitis and pancreatitis. However, there was no patient with mortality and renal failure during the hospitalization.

Conclusions:

There were no significant differences between the transplant patients and the general population in the incidence, clinical features, diagnosis and postoperative progresses of acute appendicitis.

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Table 1.
Incidence of acute appendicitis by demographics
Demographics No. No. of acute appendicitis Incidence (%) P-value
Gender Male 1,969 13 0.66 0.108
Female 978 2 0.20
Age at transplantation <20 161 1 0.62  
20∼29 592 7 (1) 1.18  
30∼39 894 3 0.34 0.259
40∼49 764 2 (1) 0.26  
≥50 536 2 0.37  

( ); number of female patients.

Table 2.
Clinical characteristics of acute appendicitis after kidney transplantation
Clinical manifestations
Gender (Male: Female) 13:2 (86.6%:13.4%)
Age at diagnosis (years old) 37.2±10.1
Prodromal symptom (Yes: No) 10:5 (66.6%:33.4%)
Localized tenderness (Yes: No) 14:1 (93.3%:6.7%)
Leukocytosis (<10,000/μ L:≥10,000/μ L) 3:12 (20.0%:80.0%)
Duration (symptom onset∼ operation) 2.0±1.2 days
Duration (kidney transplantation∼ operation) 1,435.0±1,081.6 days
Radiologic diagnostic tool  
 Plain abdomen X-ray 2 (13.3%)
 Ultrasonography 8 (53.3%)
 Computed tomography 5 (33.4%)
Operation method  
 Open appendectomy 7 (46.6%)
 Laparoscopic appendectomy 8 (53.4%)
Drain use (Yes: No) 4:11 (26.6%:73.4%)
Pathology  
 Non pathologic diagnosis 2 (13.3%)
 Suppurative inflammation 13 (86.7%)
  Perforated appendicitis 4/13 (30.8%)
Hospital stay 11.1±7.8 days
Hospital stay after operation 9.2±6.6 days
 Non-perforated appendix 9.2±5.4 days
 Perforated appendix 9.3±1.9 days
Complication 2 (13.3%)
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