Hepatic Hydatid Cyst (Dog Tapeworm Cyst)
Hydatid disease (echinococcosis) develops after ingestion of Echinococcus eggs. The liver is most often involved; lung and other organs can also be affected. The clinical picture varies from asymptomatic to right upper abdominal fullness and pain, or — rarely — severe scenarios after cyst rupture. Treatment follows the WHO classification and combines surgery, percutaneous techniques (e.g. PAIR) and albendazole.
Hydatid cyst, also known colloquially as 'dog cyst', is a parasitic disease caused by Echinococcus. The liver is the most commonly affected organ. Treatment — surgical, interventional or medical — is planned based on cyst size, location, WHO classification, comorbidities and complication risk.
Symptoms
- Right upper abdominal fullness, pain
- Nausea
- Jaundice if large cysts compress the bile duct
- Allergic reactions
- Shock-like picture if cyst ruptures
Diagnosis
US, CT or MRI define cyst structure. The WHO classification (CE1–CE5) guides treatment. Serology supports the diagnosis.
Treatment options
Active cysts are often treated surgically or, in selected patients, with PAIR plus albendazole. Inactive cysts (CE4–CE5) are usually monitored.
Comparison table
| Condition | Symptom | Required test | Possible approach | Urgency |
|---|---|---|---|---|
| Gallstones | Pain after fatty meals, bloating | USG, blood tests | Follow-up or surgery | Depends on symptoms |
| Cholecystitis | Prolonged right upper abdominal pain, fever | USG, CRP, WBC | Urgent evaluation / surgery | High |
| CBD stones | Jaundice, dark urine | MRCP, bilirubin | ERCP ± surgery | High |
| Liver cyst | Usually asymptomatic | USG, CT/MRI | Follow-up or surgery | Low–Moderate |
| Hydatid cyst | Right upper abdominal fullness, pain | USG, CT/MRI, serology | Medication ± surgery | Moderate |
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Share your existing ultrasound, MRCP, CT/MRI, blood tests or discharge summary to receive preliminary information about the process. A definitive evaluation is only possible after physical examination and the necessary investigations.
The information on this page is provided for general patient education only and does not replace diagnosis, treatment or any surgical decision. An assessment appropriate for you can only be made after a clinical examination and the necessary investigations.