- Open Access
Surgical treatment of hepatic hydatic disease during pregnancy: report of two cases
© Springer-Verlag 2007
- Received: 15 August 2007
- Accepted: 30 November 2007
- Published: 10 January 2008
Current treatment options for hepatic hydatid disease include surgery, medical treatment, and percutaneous drainage. However, the choice between these treatment modalities for pregnant women is still controversial. We reported in this article two pregnant patients with hepatic hydatid cysts who underwent surgical treatment.
- Hydatid cyst
Hydatid disease is a parasitic disease caused by the larval stage of Echinococcous granulosus or Echinococcous multicularis, which are microscopic tapeworm. Hepatic hydatid disease is most often caused by Echinococcus granulosus. Echinococcus multicularis usually causes alveolar echinococcosis and rarely hepatic echinococcosis. Humans, contracting from infected sheep and cattle, are accidental intermediate hosts. Hydatid disease is a public health problem that is commonly seen in the Middle East, South America, some Mediterranean countries, and Australia . The livers, lungs, and the bones are the organs that are most commonly involved; however, the cyst may be localized to any part of the body . The incidence rate of hydatid disease during pregnancy hovers approximately 1:20,000–30,000 [2–4]. Experience in the management of the disease through surgery, medical treatment, and percutaneous drainage during pregnancy is limited.
We report in this article two pregnant patients who underwent surgical treatment for hydatid liver cysts caused by Echinococcous granulosus.
The patient, a 28-year-old nullipara, applied to our clinic with the complaint of abdominal pain. The patient was 13 weeks pregnant and sensitivity was determined in the right upper quadrant during the physical examination. Rebound tenderness and muscular defense were not present. WBC and hemoglobin counts were 12,400/mm3 and 11.6 g/dl, respectively. Eosinophilia was not present. The serum bilirubin, ALT, AST, and alkaline phosphatase levels were all normal. Ultrasonography (US) examination revelaled a cyst containing daughter vesicles in the fifth and sixth segments of the liver with septa and regular borders which measured 137 × 190 × 203 mm. Intra- and extrahepatic biliary ducts were normal. The cyst was consistent a with hydatid cyst. It was determined that the single live fetus, of which the dimensions were consistent with a 13 week and 2 day fetus, had normal morphology and normal uterine hemodynamics. Serological examination revealed an indirect hemagglutinin titer of 1:1024. Subcostal incision, which is appropriate for hepatic surgery, was made. Partial cystectomy was performed. There was no bile in the cyst. The daughter vesicles and germinative membrane were totally removed. Drains were placed into and in front of the cyst. The drains were removed on the postoperative third and fifth days.
The patient did not receive additional treatment until labor. She gave birth to a healthy baby weighing 3200 g via vaginal delivery. After delivery a computed tomograpy scan of the thorax was performed, but no additional hydatic cyst was found.
Examinations of the patients were performed and hydatic cyst panel was applied to the patients once every 6 months. Recurrence was not determined in the patients at the end of the 14-month and 5-year follow-up examinations, respectively.
The decrease in cellular immunity during gestation leads to the occurrence and progression of hydatic disease . According to their localization, complications of hepatic hydatid cysts include rupture, anaphylaxis, and cyst torsion. As for pregnant women, complications such as abdominal pain, dystosis, delivery obstruction, and uterine rupture, which vary according to the involvement site and the dimensions of the cyst, may be seen . Moreover, it has been reported that patient deaths may occur due to anaphylaxis, which results from rupture of cysts during labor .
Current treatment options for hydatid disease include surgery, medical treatment, and percutaneous drainage. However, it is hard to choose the method and timing for treatment in pregnant women. Some articles have shown that the administration of these drugs after the first trimester is safe [6, 7]. Van Vliet et al. have reported that large hydatid cysts can be treated by albendazole after the first trimester . The administration of anthelmintic benzimidazole-carbamate drugs is generally tolerated by the patient and partially effective. However, the two benzimidazolic drugs, namely, albendazole and mebendazole are in pregnancy category C. It has been shown in animal models that medical treatment of the disease is embryotoxic and teratogenic . For this reason, the administration of these drugs to pregnant women is still controversial.
Cysts recurring after surgery or cysts that do not demonstrate regression after chemotherapy may be treated with percutaneous drainage. The procedure is highly effective in intact univescular and multivesicular cysts with few large daughter cysts . Although Ustünsöz et al.  reported that they had used the PAIR technique during the second trimester and obtained good results, the effectiveness of this technique during gestation is not yet well established through clinical experience. Moreover, percutaneous interventions are promising, though they are difficult to apply due to the enlargement of the uterus during pregnancy. We did not apply this technique to our patients, because the cysts in both patients were type-III cysts, and the PAIR technique cannot be done in superficial or pedinculated cysts, small volume cysts, and cysts with multiple small daughter cysts [10, 12, 13].
As a result, the treatment of hydatid disease is difficult during gestation and neither surgical nor medical treatments are completely safe. We reported in this article two pregnant patients with hepatic hydatid cysts who underwent surgical treatment without maternal and fetal complications.
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