Primary granulocytic sarcoma of meninges and mediastinum as diagnostic dilemma.

Granulocytic sarcoma is a rare hematological neoplasm which is often misdiagnosed. We report two patients of primary granulocytic sarcoma, one at meninges who was diagnosed radiologically as meningioma and on histopathology as langerhans cell histiocytosis. The second patient presented with an ulcerated chest wall swelling, who on histopathology revealed malignant round cell tumour. Both the patients subsequently proved as primary granulocytic sarcoma on immunohistochemistry. These two cases are reported here due to their rarity.