Synovium is specialized mesenchymal tissue lining the inner surface of the joint capsule and is the site for a series of pathologic processes that are characteristic, and in some cases specific, to this distinctive tissue. Hemosiderotic synovitis is a rare and inadequately defined synovial proliferative disorder, which develops with recurrent hemorrhages in the joint. The most affected joint from bleeding is the knee whatever the etiology is. Repeated hemarthrosis may produce significant structural alteration of joints leading to chronic osteoarthritis. The most common cause is hereditary clotting factor deficiency diseases like hemophilia. We report a rare case of nonhemophilic hemosiderotic synovitis of the knee joint, in which the patient lacks history of any bleeding diathesis. Its definitive diagnosis was possible only by histopathological examination. The prompt recognition of this distinct subtype of hemosiderotic synovitis and awareness of underlying causes should lead to earlier diagnosis, appropriate therapy, less joint destruction, and better outcomes.

The oncocytic variant of papillary thyroid carcinoma represents an uncommon neoplasm whose clinicopathological features and biological behavior have not been adequately defined. We report a case of a 36-year-old female with oncocytic papillary thyroid carcinoma and associated lymphocytic thyroiditis. The cytological and histopathological features of this entity are being discussed along with the differential diagnosis and review of literature.

Neurilemmoma, also known as schwannoma, is a benign tumor arising from the neural sheath Schwann cells. This tumor has a predilection for the head and neck region but it is rarely found in the oral cavity (1%) where tongue is reported to be the favored site. We report a rare case of neurilemmoma of the hard palate along with a review of literature of this entity.

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