Fig. 1From: The identification of H3F3A mutation in giant cell tumour of the clivus and the histological diagnostic algorithm of other clival lesions permit the differential diagnosis in this locationCase presentation. a Histology of the specimen excised in 2014 from patient 1, showing numerous multinucleated osteoclast-like giant cells scattered in a background of mononuclear cells (hematoxylin and eosin stain; 20× objective). b Haematoxylin and eosin staining of tumor biopsy of patient two. Smaller osteoclast-like giant cells are observable (20× objective)Back to article page