Pulmonary hydatid infection from echinococcosis granulosus.

Diagnosis:

  • Hydatid disease of the lungs is caused by infection with the tapeworm Echinococcus granulosus.
  • Diagnosis typically involves a combination of clinical evaluation, radiological imaging, and serological testing.
  • A chest X-ray may show a cystic lesion or a mass in the lung, while a CT scan may show a well-defined, round or oval, unilocular or multilocular cyst.

Clinical presentation:

  • Patients with hydatid disease of the lungs may present with cough, chest pain, dyspnea, and hemoptysis.
  • Symptoms may be absent or mild in the early stages of the disease, and may become more severe as the cyst grows or ruptures.
  • In some cases, patients may present with anaphylaxis or a severe allergic reaction to the hydatid cyst antigens.

Radiological findings:

  • Chest X-ray or CT scan may reveal a unilocular or multilocular cystic mass in the lung.
  • Imaging may also show the presence of daughter cysts or calcifications within the cyst.
  • In some cases, imaging may reveal the presence of a collapsed cyst, a ruptured cyst, or the spread of hydatid disease to other organs.

Key takeaways:

  • Hydatid disease of the lungs is a rare but potentially serious condition caused by infection with the tapeworm Echinococcus granulosus.
  • Diagnosis typically involves a combination of clinical evaluation, radiological imaging, and serological testing.
  • Treatment usually involves surgical removal of the cyst and administration of anthelmintic medications to prevent recurrence.

In summary, hydatid disease of the lungs is a rare but potentially serious condition that requires prompt diagnosis and treatment. With appropriate management, most patients can achieve a good outcome and prevent recurrence of the disease.

Lifecycle of cystic echinococcosis
CT showing hydatid cyst / infection involving the pleura
View from the Operating Room showing Hydatid Cysts in the Pleura

Case courtesy of Dr Karwan T. Khoshnaw, Radiopaedia. From the case rID: 56784.

Case courtesy of Dr Saeed Soltany Hosn, Radiopaedia. From the case rID: 20658.