For each of the types of tumour listed on the left select the most appropriate association from the list on the right

The answer is B, C, D. Chondrosarcoma are often bulky, gelatinous cystic tumours arising from the pelvic bones.

Chordomas arise in the sacrococcygeal region or at the spheno-occipital region; the tumour cells often contain droplets of mucoid material.

Ewing's tumour usually occurs in children and consists of sheets of small cells which may contain glycogen. Giant cells are a feature of the giant cell tumour of bone or osteoclastoma (A). Urinary catecholamines are elevated (E) in neuroblastoma, a childhood tumour which may be difficult to distinguish from Ewing's tumour histologically.