Central nervous system hydatidosis comprises about 1–3% of cases of hydatid disease.1–4 Primary hydatid cyst of the brain is uncommon and usually seen as a single cyst. Multiple hydatid cysts of the brain are rare. We present a rare case of calvarial hydatid cyst in a 20-year-old man who presented with scalp swelling for 14 years (figure 1).

CT scan showed multiple contrast non-enhancing cysts in both parietal regions, with evidence of calcification (figure 2). MRI showed a 11.5×8 cm sized lesion involving both …