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Eur Radiol ; 25(9): 2797-804, 2015 Sep.
Article in English | MEDLINE | ID: mdl-25773938

ABSTRACT

OBJECTIVE: To identify the distribution and frequency of computed tomography (CT) findings in patients with nosocomial rapidly growing mycobacterial (RGM) infection after laparoscopic surgery. METHOD: A descriptive retrospective study in patients with RGM infection after laparoscopic surgery who underwent CT imaging prior to initiation of therapy. The images were analyzed by two radiologists in consensus, who evaluated the skin/subcutaneous tissues, the abdominal wall, and intraperitoneal region separately. The patterns of involvement were tabulated as: densification, collections, nodules (≥1.0 cm), small nodules (<1.0 cm), pseudocavitated nodules, and small pseudocavitated nodules. RESULTS: Twenty-six patients met the established criteria. The subcutaneous findings were: densification (88.5%), small nodules (61.5%), small pseudocavitated nodules (23.1 %), nodules (38.5%), pseudocavitated nodules (15.4%), and collections (26.9%). The findings in the abdominal wall were: densification (61.5%), pseudocavitated nodules (3.8%), and collections (15.4%). The intraperitoneal findings were: densification (46.1%), small nodules (42.3%), nodules (15.4%), and collections (11.5%). CONCLUSION: Subcutaneous CT findings in descending order of frequency were: densification, small nodules, nodules, small pseudocavitated nodules, pseudocavitated nodules, and collections. The musculo-fascial plane CT findings were: densification, collections, and pseudocavitated nodules. The intraperitoneal CT findings were: densification, small nodules, nodules, and collections. KEY POINTS: • Rapidly growing mycobacterial infection may occur following laparoscopy. • Post-laparoscopy mycobacterial infection CT findings are densification, collection, and nodules. • Rapidly growing mycobacterial infection following laparoscopy may involve the peritoneal cavity. • Post-laparoscopy rapidly growing mycobacterial intraperitoneal infection is not associated with ascites or lymphadenopathy.


Subject(s)
Cross Infection/diagnostic imaging , Laparoscopy , Postoperative Complications/diagnostic imaging , Tomography, X-Ray Computed/methods , Abdominal Wall/microbiology , Adult , Female , Humans , Male , Middle Aged , Peritoneal Cavity/diagnostic imaging , Peritoneal Cavity/microbiology , Postoperative Complications/microbiology , Retrospective Studies , Skin/diagnostic imaging , Skin/microbiology , Subcutaneous Tissue/diagnostic imaging , Subcutaneous Tissue/microbiology , Young Adult
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