Iron Maiden singer Bruce Dickinson has spent the early weeks of 2015 undergoing treatment for a cancerous tumor.

The band revealed Dickinson's diagnosis in a post at the official Iron Maiden site published Feb. 19, which we've excerpted below:

Just before Christmas, Maiden vocalist Bruce Dickinson visited his doctor for a routine check-up. This led to tests and biopsies which revealed a small cancerous tumour at the back of his tongue. A seven week course of chemotherapy and radiology treatment was completed yesterday. As the tumour was caught in the early stages, the prognosis thankfully is extremely good. 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. Bruce is doing very well considering the circumstances and the whole team are very positive.

There's no word yet regarding how this might affect Maiden's rumored plans for a new album and tour this year, but the main priority right now is obviously making sure Dickinson is well and truly on the mend. Here's hoping he's on the road to a full recovery, and will be resuming his rightful place behind the mic sometime soon.

Why Isn't Iron Maiden in the Rock and Roll Hall of Fame?

See the Yearbook Photos of Bruce Dickinson and Other Rock Stars