{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,25]],"date-time":"2026-09-25T14:48:19Z","timestamp":1790347699923,"version":"4.1.0"},"reference-count":11,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2020,10,26]],"date-time":"2020-10-26T00:00:00Z","timestamp":1603670400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2020,10,26]],"date-time":"2020-10-26T00:00:00Z","timestamp":1603670400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"name":"Fund Project of key Laboratory of Major Diseases Medicine in Xinjiang","award":["SKLIB-XJMDR-2016-2"],"award-info":[{"award-number":["SKLIB-XJMDR-2016-2"]}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["J Orthop Surg Res"],"published-print":{"date-parts":[[2020,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec>\n<jats:title>Background<\/jats:title>\n<jats:p>Hydatid disease (HD) is a zoonotic parasitic disease caused by the larvae of Echinococcus, It is mainly prevalent in pastoral areas. Bone echinococcosis is rare, accounting for 0.5 to 4.0% of all echinococcosis. It is likely to miss the diagnosis and misdiagnose due to non-specific early symptoms and the clinical manifestations and imaging features. The clinical data of 15 patients with pelvic cystic echinococcosis were analyzed retrospectively, and the X-ray, CT, and MRI imaging features of the disease were discussed, which are reported below.<\/jats:p>\n<\/jats:sec><jats:sec>\n<jats:title>Methods<\/jats:title>\n<jats:p>All 15 patients underwent CT scan evaluation. A total of 8 patients underwent coronal, sagittal, and three-dimensional reconstruction with 3-mm-slice thickness, and 4 patients underwent X-ray plain film examination. Five cases underwent MRI scan. Eight cases underwent MRI or CT enhanced scan.<\/jats:p>\n<\/jats:sec><jats:sec>\n<jats:title>Results<\/jats:title>\n<jats:p>X-ray plain film is characterized by continuous cystic bone destruction, irregular low-density shadow when invading soft tissue, and sometimes calcification which can be seen on the wall or inside the cyst. The involved sacroiliac joint or hip joint may narrow or disappear. The involvement of pelvic cystic echinococcosis is relatively wide, and 80% of patients with pelvic cysts in this group had multiple lesions in the same period. Cystic expansive bone destruction was the most common. Pelvic CT revealed a lobulated hypodense lesion of varying size with internal septae, causing cortical thinning and destruction. Most of them had no periosteal reaction. The iliopsoas muscle is most easily invaded. Single cystic echinococcosis of pelvis showed intermediate or low signal intensity on T1-weighted images and hyperintensity on T2-weighted images in the involved bone and surrounding soft tissue on MRI, and the cyst wall showed linear low signal in T1WI, T2WI, and STIR sequences. The polycystic type is characterized by multiple cysts of varying signal intensity (daughter cysts) within a larger cyst is the typical MRI finding, forming \u201csmall vesicles\u201d high signal daughter cysts. Osteosclerosis or calcification showed low signal in T1WI and T2WI.<\/jats:p>\n<\/jats:sec><jats:sec>\n<jats:title>Conclusions<\/jats:title>\n<jats:p>The results of this study suggest that the lesions of pelvic cystic echinococcosis are mostly cystic expansive and osteolytic bone destruction, which is easy to invade the surrounding soft tissue, often accompanied with calcification; among them, multiple cystic lesions are characteristic.<\/jats:p>\n<\/jats:sec>","DOI":"10.1186\/s13018-020-01912-2","type":"journal-article","created":{"date-parts":[[2020,10,26]],"date-time":"2020-10-26T16:03:08Z","timestamp":1603728188000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Evaluation of imaging features of pelvic echinococcosis based on multimodal images"],"prefix":"10.1186","volume":"15","author":[{"given":"Yu-Wei","family":"Chen","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A. I. E. R. K. E. N.","family":"aikebaier","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuan","family":"Zhao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2020,10,26]]},"reference":[{"issue":"4","key":"1912_CR1","volume":"11","author":"F Inayat","year":"2019","unstructured":"Inayat F, Rana RE, Azam S, et al. Pelvic bone hydatidosis: a dangerous crippling disease [J]. Cureus. 2019;11(4):e4465..","journal-title":"Cureus."},{"issue":"10","key":"1912_CR2","doi-asserted-by":"publisher","first-page":"1045","DOI":"10.1002\/dc.24198","volume":"47","author":"P Ramteke","year":"2019","unstructured":"Ramteke P, Phulware RH, Shende T, et al. Hydatid cyst of femur, radiologically mimicking a sarcoma [J]. 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J Orthop Case Rep. 2017;7(4):25\u20138. https:\/\/doi.org\/10.13107\/jocr.2250-0685.834.","journal-title":"J Orthop Case Rep"},{"issue":"3","key":"1912_CR5","doi-asserted-by":"publisher","first-page":"442","DOI":"10.4103\/0255-0857.158587","volume":"33","author":"F Babitha","year":"2015","unstructured":"Babitha F, Priya PV, Poothiode U. Hydatid cyst of bone [J]. Indian J Med Microbiol. 2015;33(3):442\u20134.","journal-title":"Indian J Med Microbiol"},{"issue":"5","key":"1912_CR6","doi-asserted-by":"publisher","first-page":"541","DOI":"10.1016\/j.lpm.2014.11.019","volume":"44","author":"K Bouza\u00efdi","year":"2015","unstructured":"Bouza\u00efdi K, Daghfous A, Chelli Bouaziz M, et al. Rare cause of symptomatic lumbosciatica: pelvic bone hydatidosis [J]. 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The use of polymethylmethacrylate in the management of hydatid disease of bone [J]. J Bone Joint Surg Br. 2001;83:1005\u20138.","journal-title":"J Bone Joint Surg Br."},{"key":"1912_CR10","doi-asserted-by":"publisher","first-page":"1531","DOI":"10.2214\/ajr.168.6.9168719","volume":"168","author":"EM Merkle","year":"1997","unstructured":"Merkle EM, Schulte M, Vogel J, et al. Musculoskeletal involvement in cystic echinococcosis: report of eight cases and review of the literature [J]. AJR Am J Roentgenol. 1997;168:1531\u20134.","journal-title":"AJR Am J Roentgenol."},{"key":"1912_CR11","doi-asserted-by":"publisher","unstructured":"Salman F, Khan MI, et al. Hussain pathological fracture of femoral neck in a middle-aged woman: a rare presentation of primary hydatid cyst disease in humans [J]. 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