Complicated pulmonary hydatid cyst

Case contributed by Mohammadtaghi Niknejad
Diagnosis almost certain

Presentation

Work up for cough and hemoptysis. Negative for tuberculosis.

Patient Data

Age: 75 years
Gender: Male

A 78×50 mm thick-walled air-filled cavitary lesion with dependent internal membranous contents is present at the right lower lobe that communicates with a bronchus.

Additionally, a few nodular opacities less than 12 mm, and some atelectatic bands are scattered at both lung fields.

Case Discussion

Features on CT images are compatible with a complicated pulmonary hydatid cyst; the patient had peripheral eosinophilia and positive IgG echinococcal antibody.

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