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2013 | 85 | 12 | 693-698
Tytuł artykułu

Assessment of the accuracy of preoperative imaging methods in the diagnosis of hepatic single-chamber echinococcosis

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Echinococcosis is an infectious disease, caused by larval stages of cestode species of the genus Echinococcus. The course of the disease is determined on the basis of the location and larval size. In 80-95% of cases echinococcosis is located in the liver and lungs, rarely in the brain. Symptoms are usually uncharacteristic for an uncomplicated disease. The diagnosis of echinococcosis is based on imaging and immunodiagnostic tests. The aim of the study was to assess the accuracy of preoperative imaging methods in the diagnosis of hepatic single- chamber echinococcosis. Material and methods. Amongst the 110 patients with hepatic cysts diagnosed during the period between 2000 and 2009, a group of 30 subjects with suspicion of single-chamber echinococcosis (ultrasound and CT) was isolated. The imaging methods visualized structures typical for hydatid cysts: the mother cyst with satellite cysts called “ honeycomb appearance”, cysts with calcified walls and compartments, and endocyst separation called “water lily-sign”. The study group comprised 22 female and 8 male patients with an average age of 52±16.2 years. The histopathological examination of the excised cyst verified the diagnosis. Results. Single-chamber echinococcosis was finally recognized in 19 cases, while in the 11 remaining cases the parasitic disease was excluded. The sensitivity of imaging methods was estimated at 73.7%, specificity - 88.9%, negative predictive value - 61.5%, positive predictive value - 93.3%, Youden`s factor - 0.626, and Φ index - 0.586. Conclusions. In conclusion, the presence of an unilocular cyst with an uniform anechoic content can be a simple cyst or single-chamber echinococcus cyst. The typical, characteristic image of a hydatid cyst, such as the “water lily-sign” is rarely observed during imaging examinations. It has also been shown that cystic calcification, observed during ultrasonography and computed tomography was evidence of the parasitic character of the lesion.
Wydawca

Rocznik
Tom
85
Numer
12
Strony
693-698
Opis fizyczny
Daty
wydano
2013-12-01
online
2014-01-25
Twórcy
  • Department of Gynecology and Obstetrics J. Śniadecki Memorial Voivodship Hospital in Białystok
  • 2nd Chair and Department of General and Gastroenterological Surgery, Medical University in Białystok
  • 2nd Chair and Department of General and Gastroenterological Surgery, Medical University in Białystok
Bibliografia
  • 1. Buczek A: Choroby pasożytnicze - epidemiologia, diagnostyka, objawy. Lublin 2005;185-92.
  • 2. Cianciara J, Juszczyk J: Choroby zakaźne i pasożytnicze. PZWL, Warszawa 2007; 509-11.
  • 3. Dziubek Z: Choroby zakaźne i pasożytnicze.PZWL, Warszawa 2003; 483-87.
  • 4.Olson PD, Zarowiecki M, Kiss F, Brehm K: Cestode genomics - progress and prospects for advancing basic and applied aspects of flatworm biology.Parasite Immunol 2012; 34: 130-50.[WoS]
  • 5. Li T et al.: Post-treatment follow-up study of abdominal cystic echinococcosis in tibetan communities of northwest Sichuan Province, China.PLoS Negl. Trop Dis 2011; 5: 1364.[WoS][Crossref]
  • 6. Magdzik W, Naruszewicz-Lesiuk D, Zieliński A: Choroby zakaźne i pasożytnicze - epidemiologia i profilaktyka. PZWL, Warszawa 2007; 30-33.
  • 7. Gharbi AH , Hassine W, Brauner WM et al.: Ultrasound examination of hydatid liver. Radiology 1981; 139: 459-63.
  • 8. Mortele KJ, Ros PR: Cystic focal liver lesions in the adult: Differential CT, MRI imaging features.Radiographics 2001; 24:9 37-55.
  • 9. Pedrosa I, Saiz A, Arrazola J: Hydatid disease.Radiologic pathologic features complications. Radiographics 2000; 20: 795-817.
  • 10. Shambesh MA , Craig PS, Macpherson CNL et al.: An extensive ultrasound and serologic study to investigate the prevalence of human cystic echinococcosis in Northern Libya. Am J Trop Med Hyg 1999; 60: 462-68.
  • 11. McManus DP, Gray DJ, Zhang W, Yang Y: Diagnosis, treatment, and management of echinococcosis.Br Med J 2012; 344: 3866.
  • 12. Rausch RL : Life cycle patterns and geographic distribution of Echinococcus species.In r. C. A. Thompson and A. J. Lymbery (ed.), Echinococcus and hydatid disease. CAB International, Wallingford, United Kingdom1995; 88-134.
  • 13. Schantz PM, Chai J, Craig PS et al.: Epidemiology and control of hydatid disease. In r. C. A.Thompson and A. J. Lymbery (ed.), Echinococcus and hydatid disease. CAB International, Wallingford, United Kingdom 1995; 233-331.
  • 14. Pruszyński B: Radiologia - diagnostyka obrazowa, RTG, USG, MR, radioizotopy. Wydawnictwo Lekarskie PZWL, Warszawa 2001.
  • 15. WHO Informal Working Group. International classification of ultrasound images in cystic echinococcosis for application in clinical and field epidemiological settings. Acta Trop 2003; 85: 253-61.
  • 16. Caremani M, Bence A, Maestrini R et al.: Ultrasound imaging in cystic echinococcosis. Proposal of a new sonographic classification. Acta Trop 197; 67: 91-105.
  • 17. Pawłowski ZS : Actual developments in clinical diagnosis and treatment of echinococcosis. Clin Microbiol Infec 1999; 5: 10.
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_pjs-2013-0106
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