Iron Maiden Singer Bruce Dickinson Treated for Tongue Cancer

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Bruce Dickinson of Iron Maiden performs on stage during 'Celebrating Jon Lord' at Royal Albert Hall on April 4, 2014 in London, United Kingdom. 

Metal legends Iron Maiden revealed that lead singer Bruce Dickinson is currently recovering from treatment for tongue cancer in a Facebook post on Thursday (Feb. 19).

The post says that Dickinson's doctor noticed a "small cancerous tumour at the back of his tongue" during a routine checkup in December. The Maiden frontman finished a "seven-week course of chemotherapy and radiology" on Wednesday.

"As the tumour was caught in the early stages, the prognosis thankfully is extremely good," the Facebook post reads. "Bruce's medical team fully expect him to make a complete recovery with the all clear envisaged by late May. It will then take a further few months for Bruce to get back to full fitness. In the meantime we would ask for your patience, understanding and respect for Bruce and his family's privacy until we update everyone by the end of May."

Iron Maiden Wraps at No. 1 on Hot Tours List

Iron Maiden hadn't announced any tour plans for 2015, so no concerts have been postponed or canceled as part of this news.

Dickinson joined the British metal band on its third and most celebrated album, 1982's The Number of the Beast, marking the start of its classic period. Dickinson left Iron Maiden in 1993 but returned in 1999.

Their last album, 2010's The Final Frontier, was their highest-charting release on the Billboard 200, peaking at No. 4.