Hour-Glass Tumors of the Spine

Surgical treatment of benign neurogenic tumours of the mediastinum: a single institution report☆

“…They were identified and named 'hourglass' by Heuer [11] in 1929, as did Naffziger and Brown [12] in 1933. The term 'dumbbell' was first used by Love and Dodge [13] in 1952, describing the spinal canal involvement.…”

A case of extradural spinal meningioma.

“…Haft and Shenkin (1963) were able to trace seven wholly extradural meningiomas in their review of 371 cases of extradural spinal neoplasms. Naffziger and Brown (1933) referred to a meningioma in the lower cervical region in continuity with a mass at the apex of the right lung and to another patient in whom the spinal portion of an 'haemangio-endothelioma' at D6 and 7 was removed which was thought to be continuous with a mass in the right thorax. Local spinal pain is a common occurrence at the site of extramedullary tumours and pain is often referred to the legs with advancing spinal cord compression.…”

Posterior scalloping of vertebral bodies in uncontrolled hydrocephalus

“…The patient was a young girl who had difficulty in walking for a year. Of 15 cases of dumbbell tumours of the spine reported by Naffziger and Brown (1933), four were diagnosed as haemangioendotheliomas. Intraspinal lipomas may cause localized enlargement of the canal with posterior scalloping of several vertebrae, but, according to Ehni and Love (1945).…”