title: Appendiceal mass: conservative therapy followed by interval laparoscopic appendectomy.
abstract: BACKGROUND
  Current therapy of patients with appendiceal abscess or phlegmon is in evolution. Controversial areas include initial conservative therapy, drainage of periappendiceal abscesses, and the role of interval appendectomy.
  
  
  OBJECTIVE
  To evaluate the safety and efficacy of conservative therapy and of interval laparoscopic appendectomy (ILA).
  
  
  METHODS
  Patients with signs and symptoms of acute appendicitis and a palpable right lower quadrant mass were included. Abscess/phlegmon was documented with ultrasound or computerized tomography. After initial therapy with antibiotics, patients were discharged to home. ILA was performed 6 to 12 weeks later.
  
  
  RESULTS
  Twelve patients were included. Four patients had phlegmonous appendicitis and eight had an abscess, but only four had percutaneous drainage. All patients improved without surgical exploration and were subjected to ILA. ILA was successful in 11 of 12 patients; a median hospital postoperative stay of 1 day was required, and no perioperative morbidity was encountered. All patients returned to routine activities within 2 weeks of surgery.
  
  
  CONCLUSIONS
  1) Initial conservative management of patients with appendiceal abscess/phlegmon is prudent, safe, and effective. 2) Interval laparoscopic appendectomy can be performed safely and effectively.
authors.affiliation: Harbor UCLA Medical Center, Torrance 90509.
authors.forename: H I
authors.initials: HI
authors.lastname: Vargas
authors.forename: A
authors.initials: A
authors.lastname: Averbook
authors.forename: M J
authors.initials: MJ
authors.lastname: Stamos
mesh_terms: D000038:Abscess / Q000175:diagnosis / Q000628:therapy*; D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D001062:Appendectomy / Q000379:methods*; D001064:Appendicitis / Q000175:diagnosis / Q000628:therapy*; D002481:Cellulitis / Q000175:diagnosis / Q000628:therapy*; D002985:Clinical Protocols; D003131:Combined Modality Therapy; D003663:Decision Trees; D004322:Drainage / Q000379:methods; D005260:Female; D006801:Humans; D007262:Infusions, Intravenous; D010535:Laparoscopy / Q000379:methods*; D007902:Length of Stay / Q000706:statistics & numerical data; D008297:Male; D011446:Prospective Studies; D016896:Treatment Outcome
chemical_list: D000900:Anti-Bacterial Agents