Chronic osteomyelitis of the ulna occurring in syringomyelia.

5-HT contents of the brain. The possibility exists that some other indole products of the tumour or unidentified intermediary metabolites of 5-HT, having structural similarity, may behave in the same way and are capable of producing mental change. Whatever mechanism may be involved for the cerebral metabolism of serotonin, in the light of the above experimental evidences, and in the absence of any other known cause, the neurological and mental symptoms presented by this patient, along with attacks of flushing, strongly suggests that a disturbance of cerebral metabolism of serotonin was responsible for the symptoms.