*[[Abdominal X-ray|Plain abdominal radiography]] is not the most useful tool in making a diagnosis of appendicular abscess.
*[[Abdominal X-ray|Plain abdominal radiography]] is not the most useful tool in making a diagnosis of appendicular abscess.
==Treatment==
No universal standard treatment exists for appendicitis complicated by abscess. The preferred treatment includes non-operative management such as drainage and broad spectrum IV antibiotics along with IV fluids followed by surgery which includes interval laparoscopic appendectomy. It has proved to have a high success rates up to 97% and low incidences of complications.<ref name="pmid12037755">{{cite journal |vauthors=Samuel M, Hosie G, Holmes K |title=Prospective evaluation of nonsurgical versus surgical management of appendiceal mass |journal=J. Pediatr. Surg. |volume=37 |issue=6 |pages=882–6 |year=2002 |pmid=12037755 |doi= |url=}}</ref><ref name="pmid16175691">{{cite journal |vauthors=Kaminski A, Liu IL, Applebaum H, Lee SL, Haigh PI |title=Routine interval appendectomy is not justified after initial nonoperative treatment of acute appendicitis |journal=Arch Surg |volume=140 |issue=9 |pages=897–901 |year=2005 |pmid=16175691 |doi= |url=}}</ref><ref name="pmid21540609">{{cite journal |vauthors=Ansaloni L, Catena F, Coccolini F, Ercolani G, Gazzotti F, Pasqualini E, Pinna AD |title=Surgery versus conservative antibiotic treatment in acute appendicitis: a systematic review and meta-analysis of randomized controlled trials |journal=Dig Surg |volume=28 |issue=3 |pages=210–21 |year=2011 |pmid=21540609 |doi=10.1159/000324595 |url=}}</ref><ref name="pmid17999120">{{cite journal |vauthors=Meshikhes AW |title=Management of appendiceal mass: controversial issues revisited |journal=J. Gastrointest. Surg. |volume=12 |issue=4 |pages=767–75 |year=2008 |pmid=17999120 |doi=10.1007/s11605-007-0399-1 |url=}}</ref>
===Percutaneous drainage===
*Percutaneous drainage can be performed under USG or CT guidance, using either the Seldinger or trocar technique.<ref name="pmid14767853">{{cite journal |vauthors=Hogan MJ |title=Appendiceal abscess drainage |journal=Tech Vasc Interv Radiol |volume=6 |issue=4 |pages=205–14 |year=2003 |pmid=14767853 |doi= |url=}}</ref>
*USG is limited if the abscess is small, obscured by other structures, or if precise placement is required because of nearby vessels or organs. In these cases, CT is the optimal imaging modality.<ref name="pmid11232683">{{cite journal |vauthors=Gress F, Schmitt C, Sherman S, Ciaccia D, Ikenberry S, Lehman G |title=Endoscopic ultrasound-guided celiac plexus block for managing abdominal pain associated with chronic pancreatitis: a prospective single center experience |journal=Am. J. Gastroenterol. |volume=96 |issue=2 |pages=409–16 |year=2001 |pmid=11232683 |doi=10.1111/j.1572-0241.2001.03551.x |url=}}</ref>
*When an abscess is deep in the pelvis, depending on the specific location of the fluid collection, access may be obtained via transgluteal, transvaginal, or transrectal approaches.<ref name="urlRetroperitoneal Perforation of the Appendix Presenting as a Right Thigh Abscess">{{cite web |url=http://dx.doi.org/10.1155/2015/707191 |title=Retroperitoneal Perforation of the Appendix Presenting as a Right Thigh Abscess |format= |work= |accessdate=}}</ref>
*If the fluid collection is sterile, a transgluteal approach is preferred because it allows for sterile technique.<ref name="pmid11232683">{{cite journal |vauthors=Gress F, Schmitt C, Sherman S, Ciaccia D, Ikenberry S, Lehman G |title=Endoscopic ultrasound-guided celiac plexus block for managing abdominal pain associated with chronic pancreatitis: a prospective single center experience |journal=Am. J. Gastroenterol. |volume=96 |issue=2 |pages=409–16 |year=2001 |pmid=11232683 |doi=10.1111/j.1572-0241.2001.03551.x |url=}}</ref>
*Depending on the location of abscess,patient is placed in prone or supine position on the CT table
*Localization scan using CT allows in selecting a safe window of access into the collection.
*A coaxial micropuncture introducer set is advanced into the abscess under CT guidance.
*An Amplatz guidewire is advanced through the sheath and coiled within the abscess.
*After serial dilatation of the tract with a dilator, an pigtail drain is advanced over the guidewire and deployed.
===Medical Therapy===
Antibiotics should be started immediately once the diagnosis of abscess is made. Preoperative antibiotics have been associated with lower rates of wound and intra-abdominal infections.<ref name="pmid20034345">{{cite journal| author=Solomkin JS, Mazuski JE, Bradley JS, Rodvold KA, Goldstein EJ, Baron EJ et al.| title=Diagnosis and management of complicated intra-abdominal infection in adults and children: guidelines by the Surgical Infection Society and the Infectious Diseases Society of America. | journal=Clin Infect Dis | year= 2010 | volume= 50 | issue= 2 | pages= 133-64 | pmid=20034345 | doi=10.1086/649554 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=20034345 }} </ref> <ref name="SartelliViale2013">{{cite journal|last1=Sartelli|first1=Massimo|last2=Viale|first2=Pierluigi|last3=Catena|first3=Fausto|last4=Ansaloni|first4=Luca|last5=Moore|first5=Ernest|last6=Malangoni|first6=Mark|last7=Moore|first7=Frederick A|last8=Velmahos|first8=George|last9=Coimbra|first9=Raul|last10=Ivatury|first10=Rao|last11=Peitzman|first11=Andrew|last12=Koike|first12=Kaoru|last13=Leppaniemi|first13=Ari|last14=Biffl|first14=Walter|last15=Burlew|first15=Clay Cothren|last16=Balogh|first16=Zsolt J|last17=Boffard|first17=Ken|last18=Bendinelli|first18=Cino|last19=Gupta|first19=Sanjay|last20=Kluger|first20=Yoram|last21=Agresta|first21=Ferdinando|last22=Di Saverio|first22=Salomone|last23=Wani|first23=Imtiaz|last24=Escalona|first24=Alex|last25=Ordonez|first25=Carlos|last26=Fraga|first26=Gustavo P|last27=Junior|first27=Gerson Alves Pereira|last28=Bala|first28=Miklosh|last29=Cui|first29=Yunfeng|last30=Marwah|first30=Sanjay|last31=Sakakushev|first31=Boris|last32=Kong|first32=Victor|last33=Naidoo|first33=Noel|last34=Ahmed|first34=Adamu|last35=Abbas|first35=Ashraf|last36=Guercioni|first36=Gianluca|last37=Vettoretto|first37=Nereo|last38=Díaz-Nieto|first38=Rafael|last39=Gerych|first39=Ihor|last40=Tranà|first40=Cristian|last41=Faro|first41=Mario Paulo|last42=Yuan|first42=Kuo-Ching|last43=Kok|first43=Kenneth Yuh Yen|last44=Mefire|first44=Alain Chichom|last45=Lee|first45=Jae Gil|last46=Hong|first46=Suk-Kyung|last47=Ghnnam|first47=Wagih|last48=Siribumrungwong|first48=Boonying|last49=Sato|first49=Norio|last50=Murata|first50=Kiyoshi|last51=Irahara|first51=Takayuki|last52=Coccolini|first52=Federico|last53=Lohse|first53=Helmut A Segovia|last54=Verni|first54=Alfredo|last55=Shoko|first55=Tomohisa|title=2013 WSES guidelines for management of intra-abdominal infections|journal=World Journal of Emergency Surgery|volume=8|issue=1|year=2013|pages=3|issn=1749-7922|doi=10.1186/1749-7922-8-3}}</ref>
====Empiric therapy====
Monotherapy with a beta-lactam/beta-lactamase inhibitor:
*Preferred regimen (1):[[Ampicillin-Sulbactam|Ampicillin-sulbactam]] 3 g IV q6h
*Preferred regimen (2):[[Ticarcillin-Clavulanate|Ticarcillin-clavulanate]] 3 g IV q4h
*Preferred regimen (3):[[Piperacillin-tazobactam]] 3 g or 4.5 g IV q6h
Combination third generation cephalosporins PLUS metronidazole
*Preferred regimen (1): [[Ceftriaxone]] 1 g IV q24h {{and}} [[Metronidazole]] 500 mg IV q8h {{or}} 1500 mg q24h.
*Preferred regimen (2): [[Cefazolin]] 1–2 g IV q8h {{and}} [[Metronidazole]] 500 mg IV q8–12 h {{or}} 1500 mg q24h
*Preferred regimen (3): [[Cefuroxime]] 1.5 g IV q8h {{and}} [[Metronidazole]] 500 mg IV q8–12 h {{or}} 1500 mg q24h
*Preferred regimen (4): [[Cefotaxime]] 1–2 g IV q6–8 h {{and}} [[Metronidazole]] 500 mg IV q8–12 h {{or}} 1500 mg q24h
====Alternative empiric regimens====
Combination fluoroquinolone PLUS metronidazole:
*Preferred regimen (1): [[Ciprofloxacin]] 400 mg IV q12h {{and}} [[Metronidazole]] 500 mg IV q8–12 h {{or}} 1500 mg q24h
*Preferred regimen (2): [[Levofloxacin]] 750 mg IV q24h {{and}} [[Metronidazole]] 500 mg IV q8–12 h {{or}} 1500 mg q24h
Monotherapy with a carbapenem
*Preferred regimen (1): [[Imipenem-Cilastatin|Imipenem-cilastatin]] 500 mg IV q6h {{or}} 1 g q8h
*Preferred regimen (2): [[Meropenem]] 1 g IV q8h
*Preferred regimen (3): [[Doripenem]] 500 mg IV q8h
*Preferred regimen (4): [[Ertapenem]] 1 g IV q24h
====Duration====
The duration of treatment with intravenous antibiotics ranges from 5 to 10 days, until fever resolves, white blood cell count normalizes, and bowel function returns.<ref name="SartelliViale2013">{{cite journal|last1=Sartelli|first1=Massimo|last2=Viale|first2=Pierluigi|last3=Catena|first3=Fausto|last4=Ansaloni|first4=Luca|last5=Moore|first5=Ernest|last6=Malangoni|first6=Mark|last7=Moore|first7=Frederick A|last8=Velmahos|first8=George|last9=Coimbra|first9=Raul|last10=Ivatury|first10=Rao|last11=Peitzman|first11=Andrew|last12=Koike|first12=Kaoru|last13=Leppaniemi|first13=Ari|last14=Biffl|first14=Walter|last15=Burlew|first15=Clay Cothren|last16=Balogh|first16=Zsolt J|last17=Boffard|first17=Ken|last18=Bendinelli|first18=Cino|last19=Gupta|first19=Sanjay|last20=Kluger|first20=Yoram|last21=Agresta|first21=Ferdinando|last22=Di Saverio|first22=Salomone|last23=Wani|first23=Imtiaz|last24=Escalona|first24=Alex|last25=Ordonez|first25=Carlos|last26=Fraga|first26=Gustavo P|last27=Junior|first27=Gerson Alves Pereira|last28=Bala|first28=Miklosh|last29=Cui|first29=Yunfeng|last30=Marwah|first30=Sanjay|last31=Sakakushev|first31=Boris|last32=Kong|first32=Victor|last33=Naidoo|first33=Noel|last34=Ahmed|first34=Adamu|last35=Abbas|first35=Ashraf|last36=Guercioni|first36=Gianluca|last37=Vettoretto|first37=Nereo|last38=Díaz-Nieto|first38=Rafael|last39=Gerych|first39=Ihor|last40=Tranà|first40=Cristian|last41=Faro|first41=Mario Paulo|last42=Yuan|first42=Kuo-Ching|last43=Kok|first43=Kenneth Yuh Yen|last44=Mefire|first44=Alain Chichom|last45=Lee|first45=Jae Gil|last46=Hong|first46=Suk-Kyung|last47=Ghnnam|first47=Wagih|last48=Siribumrungwong|first48=Boonying|last49=Sato|first49=Norio|last50=Murata|first50=Kiyoshi|last51=Irahara|first51=Takayuki|last52=Coccolini|first52=Federico|last53=Lohse|first53=Helmut A Segovia|last54=Verni|first54=Alfredo|last55=Shoko|first55=Tomohisa|title=2013 WSES guidelines for management of intra-abdominal infections|journal=World Journal of Emergency Surgery|volume=8|issue=1|year=2013|pages=3|issn=1749-7922|doi=10.1186/1749-7922-8-3}}</ref>
There are no primary preventive measures available for appendicular abscess. Reducing the risk of appendicitis however, can help in the first place .Following a diet that includes fresh vegetables and fruit may lower the risk.[3]
Secondary prevention
Peritonitis develops from the rupturing of the appendix and can lead to death is left untreated. Acute appendicitis that is evaluated and treated early with an appendectomy generally leads to no further complications and a patient's full recovery.
References
↑Ansaloni L, Catena F, Coccolini F, Ercolani G, Gazzotti F, Pasqualini E, Pinna AD (2011). "Surgery versus conservative antibiotic treatment in acute appendicitis: a systematic review and meta-analysis of randomized controlled trials". Dig Surg. 28 (3): 210–21. doi:10.1159/000324595. PMID21540609.
↑Singal R, Gupta S, Mittal A, Gupta S, Singh M, Dalal AK, Goyal S, Singh B (2012). "Appendico-cutaneous fistula presenting as a large wound: a rare phenomenon-brief review". Acta Med Indones. 44 (1): 53–6. PMID22451186.
↑Williams, Norman (2013). Bailey & Love's short practice of surgery. Boca Raton, FLa: CRC Press. ISBN978-1444121285.
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