title: Periappendicitis: our 13 year experience.
abstract: BACKGROUND
  Periappendicitis is defined as appendiceal serosal inflammation without mucosal involvement. It is a rare benign pathology, diagnosis is difficult and carries high morbidity. A detailed literature and large series are still lacking on periappendicitis. Aim of this study is to present our clinical experience with periappendicitis.
  
  
  METHODS
  36 of retrospectively reviewed 1232 acute appendicitis patients were found to have periappendicitis on histopathological examination. Histopathological finding of appendicitis with periappendicitis in emergency appendectomy, and cases of interval appendectomy were excluded. Descriptive statistics were used to summarize the data.
  
  
  RESULTS
  The most common diagnosis was salpingitis (12), followed by pelvic inflammatory disease (9), typhoid enteritis (5), peritoneal tuberculosis (3), inflammatory bowel disease (3), and amoebiasis (1), while 3 cases remained undiagnosed.
  
  
  CONCLUSIONS
  Periappendicitis is due to extra-appendicular pathologies resulting in serosal inflammation of the appendix without mucosal involvement. In the absence of any significant history, it is difficult to distinguish periappendicitis from the common entity of acute appendicitis only on the basis of clinical examination and laboratory parameters.
  
  
  CONCLUSIONS
  Pre-operatively, it is difficult to diagnose periappendicitis, but it should be considered if the clinical signs and imaging findings are suggestive of any associated pathology in addition to the presence of typical picture of acute appendicitis and post-operatively if the patient develops any new clinical signs, as this can cause morbidity to a significant level.
authors.affiliation: Lady Hardinge Medical College and Associated Dr RML Hospital, Baba Kharak Singh Marg, New Delhi 110001, India. Electronic address: drporaschaudhary@yahoo.com.
authors.forename: Poras
authors.initials: P
authors.lastname: Chaudhary
authors.affiliation: Lady Hardinge Medical College and Associated Dr RML Hospital, Baba Kharak Singh Marg, New Delhi 110001, India.
authors.forename: Ishaq
authors.initials: I
authors.lastname: Nabi
authors.affiliation: Lady Hardinge Medical College and Associated Dr RML Hospital, Baba Kharak Singh Marg, New Delhi 110001, India.
authors.forename: Mohinder P
authors.initials: MP
authors.lastname: Arora
mesh_terms: D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D001062:Appendectomy / Q000009:adverse effects; D001064:Appendicitis / Q000209:etiology* / Q000473:pathology; D004751:Enteritis / Q000150:complications* / Q000175:diagnosis; D005260:Female; D006801:Humans; D008297:Male; D000292:Pelvic Inflammatory Disease; D010808:Physical Examination; D012189:Retrospective Studies; D012488:Salpingitis / Q000150:complications* / Q000175:diagnosis; D012700:Serositis / Q000209:etiology*; D013997:Time Factors; D014435:Typhoid Fever / Q000150:complications*
keywords: Appendicitis; Periappendicitis