Alveolar echinococcosis (AE) is caused by the tapeworm Echinococcus multilocularis. Unlike cystic echinococcosis, which forms one or more clearly demarcated cysts, AE infiltrates liver tissue in the same invasive way a malignant tumour does.
This is why CT and MRI scans of AE are frequently misread as cholangiocarcinoma or metastases. A wrong diagnosis of "cancer" means wrong treatment, severe psychological distress, and loss of precious time.
How AE Differs from Cancer on Imaging
An experienced specialist can suspect alveolar echinococcosis based on several features that distinguish it from malignant tumours:
- Irregular "moth-eaten" lesion margins with tiny internal cavities.
- Central calcifications — a characteristic pattern in chronic AE.
- Absent or minimal contrast enhancement (unlike hepatocellular carcinoma).
- Normal AFP level — the primary tumour marker for liver cancer.
- Positive serology for Echinococcus multilocularis (Em2-ELISA).
How Dangerous Is It
Without treatment, AE progresses over years, destroying the liver and spreading to other organs. Five-year survival without therapy is below 50%. With correct and timely treatment the prognosis is significantly better.
The treatment standard combines long-term albendazole with surgical resection of the affected area when technically feasible. In some patients, drug therapy alone can stabilise the disease and maintain control for years without an operation.
What to Do if You Suspect AE
If you have been diagnosed with "liver cancer" or "lesion of unknown nature" but something does not add up, seek a second opinion. Visus Medical specialises specifically in parasitic liver diseases: cystic and alveolar echinococcosis.
Bring all available imaging (CT, MRI, ultrasound) along with biochemistry results and a full blood count to your appointment. The initial consultation takes approximately 40 minutes and will give you a clear answer: parasite or not.