Germinomas are most common in teenagers. For unknown reasons they are more common in males than females. Like most brain tumours the cause of these tumours is unknown. Research is being carried out into possible causes. Other symptoms are likely to be headaches, vomiting and visual problems.
Children are often lethargic and irritable.
Other symptoms may be caused by the tumour pressing on surrounding areas such as the cerebellum. This will lead to problems with coordination and balance. People often have difficulty walking and may appear to stumble or walk awkwardly. Tumours in the pineal region may extend to the pituitary gland and result in delayed puberty in teenagers or other hormonal problems. Signs and symptoms of brain tumours are discussed in more detail in the booklet .