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SE: H1N1 novel influenza A in pregnant and immunocompromised patients. Crit Care Med 2009, in press. 16. Pak J, Tucci VT, Vincent AL, Sandin RL, Greene JN: Mucormycosis in immunochallenged patients. J Emerg Trauma Shock 2008,1(2):106–13.CrossRefPubMed 17. Hopkins Fedratinib manufacturer MA, Treloar DM: Mucormycosis in diabetes. Am J Crit Care 1997,6(5):363–7.PubMed Competing interests The authors declare that they have no competing interests. Authors’ contributions BP – conceived of the study, and participated in its design and coordination and drafted the manuscriptHB – participated in data acquisition and drafting of the manuscript EB – participated in data acquisition and drafting of the manuscript OBI – participated in data acquisition and drafting of the manuscript AB – participated in data acquisition and drafting of the manuscript YK – conceived of the study, and participated in its design and coordination All authors read

and approved the final manuscript”
“Background Appendicectomy is still the most common procedure in general surgery practice but diagnostic failure may still occur and this leads to delay in treatment or negative (non-therapeutic) appendectomies. We aimed to analyze retrospectively the diagnostic efficiency of the preoperative tests in relation with histopathologic C-X-C chemokine receptor type 7 (CXCR-7) results. Methods Data of the 277 conventional appendectomies performed for acute appendicitis (AA) between March 2007 and April 2008 were collected. Fifteen patients with perforated appendicitis, 23 patients whose preoperative laboratory tests performed at another centre and 43 patients operated on without preoperative ultrasonography (USG) were excluded. In the remaining 196 patients, all had clinical findings such as, check details history of anorexia, pain followed by nausea, right lower quadrant pain, vomiting, rebound tenderness, guarding, rigidity and conventional appendectomies were carried out.