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A Rare Case of Secondary Hydatid Cyst: Uterus and Colon Locations in the Same Patient/Nadir Bir Sekonder Kist Hidatik Olgusu: Ayni Hastada Uterus ve Kolon Lokasyonu.


Cystic echinococcosis (CE) is a common helminthic disease induced by the larval form of Echinococcus granulosus (E. granulosus). According to the World Health Organization data, this disease is endemic in South America, Eastern Europe, Russia, the Middle East and China and exhibits a high annual incidence rate of 50 per 100.000 people in these regions (1,2).

In humans, the organs that CE is commonly observed are the liver and the lungs. Cysts are identified less frequently in other organs. Cysts may be localized in an organ and structure such as abdominal or pleural cavities, kidney, spleen, bone, brain, eye, ovary, testis or pancreas. In ruptured cysts, viable cystic content and intraperitoneal infiltration of protoscoleces and secondary hydatidosis may occur. Due to the slow growth and development of the cystic structure and the response of the host immune system, the disease may not be recognized for years. The symptoms could differ based on the size and localization of the cysts (1-4).

Clinical history, serologic tests and various imaging techniques such as ultrasonography (USG), computed tomography (CT) and magnetic resonance imaging (MRI) can help make the diagnosis of cyst hydatid (3-5).

The aim of the present study was to present a case with secondary hydatid cysts in both uterus and colon.


The patient was a 71-years-old female living in Hakkari, Turkey. She applied to the Van Yuzuncu Yil University Faculty of Medicine with complaints of chronic abdominal and pelvic pain, and swelling in the abdomen. The patient was admitted to the gynecology and obstetrics service with the diagnosis of pelvic mass (hydatid cyst + cholelithiasis (hydropic bladder) after the examinations. Certain hematologic, biochemical and microbiological parameters of the patient were studied. Results demonstrated that the white blood cell was 200.001/[micro]L ([up arrow]), hemoglobin was 10.1 g/dL ([down arrow]), lymphocyte was 9.4% ([down arrow]), c-reactive protein was 184 mg/L ([up arrow]) and platelets was 706 10^3/[micro]L ([up arrow]). Other values were either normal or close to normal. Radiological MR and USG methods were used for definitive diagnosis. As a result of the evaluations, a cystic lesion of 12x11 cm in size was observed in the uterus superior that applied pressure to the uterus and urinary bladder. The sagittal T2 weighted MR images showed a type-3 cyst hydatid located at uterus posterior with daughter vesicles (Figure 1a, b,c). When the previous liver surgery history of the patient was considered, the new finding was considered to be a secondary cystic hydatid connected to that history. It was decided to operate on the patient with cystectomy and cholecystectomy methods based on the findings. In the surgery, active chronic cervicitis, chronic cholecystitis and hydatid cyst were observed. Furthermore, extensive millimetric hydatid cysts calcifications were detected in the peritoneum. The cyst capsule was detracted from the rectum with sharp and obtuse dissections in the posterior and from the uterus and intestine mucosa in the anterior and the cyst was removed with the capsule. The obtained cyst material was sent to the pathology laboratory and uterus structure in cross-sections and cuticle membrane structure in tuba uterina were observed. After the surgery, the patient was discharged due to observation of no problems in postoperative follow-up. The patient applied to the chest surgery policlinic with a shortness of breath and chest pain one week after her discharge. Patient was re-admitted with the pre-diagnosis of hydatid cysts after the examinations. T2-weighted MR a type-2 cystic lesion with detached membrane adhered to the colon anterior wall and was reported to be associated with abdomen (Figure 2). Then the patient was transferred to the general surgery service. Here the patient was operated with low anterior resection + colorectal anastomosis. In the surgery, severe serositis, transmural infarction, hemorrhage and active chronic inflammation were detected. The resection material obtained from the colon was sent to the pathology laboratory for definite diagnosis and cuticle membrane of the colon and cyst were observed in the same preparation (Figure 3). The patient was admitted for two days and kept under control, and was discharged after the necessary treatments were provided and it was considered suitable to continue treatment for cyst hydatid with Andazol at a dose of 2x400 mg.


E. granulosus leads to a chronic unilocular, encapsulated, noninvasive cystic lesion that could grow up to 0.5-3 cm diameter annually and could be treated by surgical intervention. Prognosis of the disease is slowly and not fatal (6).

CE involvement is mostly in a single organ, and two organ involvement based on a specific geographic area and the strain of the parasite could be observed in 10-15% of the patients (7). Recurrence of primary hydatid cyst after surgery is 8-22% and recurrence usually occur in the first two years (8,9). The incidence of pelvic CE varies between 0.2 and 0.9%. Ovary is the most common localization and the second is the uterus. In these cases, secondary cysts are formed as a result of the rupture of the primary cyst in other regions (8).

There are reports in the literature on the secondary hydatid cyst cases in uterus and colon (10), ovary and colon (5) due to the perforation of the primary cyst in the liver, and ruptured to the right colon from the liver (4). There are also primary CE cases reported due to involvement of the uterus (11) and colon (12). Although, Tas et al. (13), suspected an ovarian neoplasm in a 44-year-old menopausal patient with complaints of abdominal distention, they encountered primary ovary and omental CE during surgery. A case from Iran, primary uterus hydatid cyst removed from uterine on left ovary and fallopian tub of 46 years old women (14). In a six-year retrospective study of 18 patients treated surgically, localizations of CE were found in two tuba, one colon, omentum and uterus (15). In certain cases reported on these organs, information on whether the cyst was primary or secondary was not provided.

In literature review, it was observed that secondary CE was not observed frequently in both uterus and colon. Since our case was operated for the hydatid cyst in the liver, it was recognized that cysts in these two organs were primary cysts from the liver. The pre-operative diagnosis of cysts in our case was conducted with USG, MRI and CT consistent with the literature (3-6,11,12) and the cuticular layer of the cyst was revealed with histopathological methods post-operationally.


Primary involvement is rarely observed in organs such as colon and uterus in CE, secondary cysts may occur due to hepatic cyst surgery or spontaneous/traumatic rupture. In conclusion, it is possible to diagnose secondary CE in patients with primary cyst surgery history in liver or any other organ by combining the symptoms and imaging findings.

* Ethics

Informed Consent: A consent form was completed by all participants.

* Authorship Contributions

Concept: Y.E.B., G.S., Design: Y.E.B., G.S., Data Collection or Processing: R.Y., G.K., A.B., I.B., R.G., G.S., Analysis or Interpretation: Y.E.B., H.Y., A.B., Literature Search: Y.E.B., G.S., Z.T.C., Writing: Y.E.B., Z.T.C.

Conflict of Interest: No conflict of interest was declared by the


Financial Disclosure: The authors declared that this study received no financial support.


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(iD) Yunus Emre Beyhan (1), (iD) Hasan Yilmaz (1), (iD) Zeynep Tas Cengiz (1), (iD) Recep Yildizhan (2), (iD) Cetin Kotan (3), (iD) Abdussamet Batur (4), (iD) Irfan Bayram (5), (iD) Remzi Erten (5), (iD) Ahmed Galip Halidi (6)

(1) Yuzuncu Yil University Faculty of Medicine, Department of Parasitology, Van, Turkey

(2) Yuzuncu Yil University Faculty of Medicine, Department of Obstetrics and Gynecology, Van, Turkey

(3) Yuzuncu Yil University Faculty of Medicine, Department of General Surgery, Van, Turkey

(4) Yuzuncu Yil University Faculty of Medicine, Department of Radiology, Van, Turkey

(5) Yuzuncu Yil University Faculty of Medicine, Department of Pathology, Van, Turkey

(6) Mus Alparslan University, Bulanik Vocational School, Mus, Turkey

Cite this article as: Beyhan YE, Yilmaz H, Tas Cengiz Z, Yildizhan R, Kotan R, Batur A, Bayram I, Erten R, Halidi AG. A Rare Case of Secondary Hydatid Cyst: Uterus and Colon Locations in the Same Patient. Turkiye Parazitol Derg. 2019;43(3): 149-51.

Received/Gelis Tarihi: 05.02.2019 Accepted/Kabul Tarihi: 22.07.2019

Address for Correspondence/Yazar Adresi: Yunus Emre Beyhan, Yuzuncu Yil University Faculty of Medicine, Department of Parasitology, Van, Turkey

Phone/Tel: +90 542 771 95 97 E-mail/E-Posta: ORCID ID:

DOI: 10.4274/tpd.galenos.2019.6303
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2019 Gale, Cengage Learning. All rights reserved.

Article Details
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Title Annotation:Case Report/Olgu Sunumu
Author:Beyhan, Yunus Emre; Yilmaz, Hasan; Cengiz, Zeynep Tas; Yildizhan, Recep; Kotan, Cetin; Batur, Abduss
Publication:Turkish Journal of Parasitology
Date:Sep 1, 2019
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