Brain cancer symptoms: Deliciously Ella mother-in-law Tessa Jowell diagnosed with tumour

Tessa Jowell, the former Olympics Minister, has been diagnosed with an aggressive form of brain cancer.

The family of the politician, who celebrated her 70th birthday yesterday, have revealed she was told she had a high grade brain tumour in May.

Her daughter-in-law is Ella Woodward - better known as Deliciously Ella - who married her son Matt Mills in a ceremony on the island of Mustique in 2016.

The food blogger wrote on Instagram: "Matt's Mum was suddenly diagnosed with brain cancer in May.

"Her bravery, optimism, love and support for others during this process has inspired us both so much, and today we're all pledging to try and do everything we can to make people's lives with cancer better for longer."

According to the NHS, a high-grade brain tumour is malignant, meaning it is a fast-growing cancer that spreads to other areas of the brain and spine.

Malignant brain tumours are graded 3 or 4, whereas grade 1 or 2 tumours are usually classed as benign or non-cancerous. 

High-grade brain tumours - like the type Jowell is suffering from - have varying symptoms depending on how big it is and where it is located in the brain.

However, common signs include severe, persistent headaches, seizures, and persistent nausea, vomiting and drowsiness.

Additionally, mental or behavioural changes - such as memory problems or an altered personality - and progressive weakness, leading to vision or speech problems, may also be indicators.

Most malignant brain tumours develop from the glial tissue which supports the brain's nerve cells, and are known as gliomas.

In July, US Senator John McCain was diagnosed with a particularly aggressive type, glioblastoma - the most common high grade primary brain tumour in adults.

Brain tumours can affect people of any age, however they tend to be most common in older adults.

According to the NHS, around 5,000 people in the UK are diagnosed with a primary malignant brain tumour each year, however many more are told they have secondary tumours - which started elsewhere and have spread to the brain.

Sarah Lindsell, chief executive of The Brain Tumour Charity, said: "Our hearts go out to Tessa Jowell and her family after being diagnosed with a high grade brain tumour.

"And we applaud her pledge on her 70th birthday to help people whose lives are turned upside down by this devastating disease."

Jowell stood down as an MP at the 2015 general election.