Hadlee, whose 431 Test wickets are the most by a Kiwi and place him eighth on the all-time list, has undergone surgery to remove a tumour and will have chemotherapy over the course of the next few months.
A statement released by New Zealand Cricket on behalf of the 66-year-old’s wife, Lady Dianne Hadlee, read: “Last month, Richard had a routine, three-year colonoscopy, and we discovered that he has bowel cancer.
“He has since had an operation to remove the tumour. This operation went extremely well and he has made an excellent recovery from surgery.
“As a safeguard, further treatment in the form of chemotherapy will commence shortly and last for a few months.
“It is expected that, in time, he will have a full recovery.
“Our reasons for making this statement are a desire to be transparent, and to prevent the inevitable speculation and incorrect rumours.”
Hadlee is widely regarded as one of the finest bowling all-rounders to have graced the game, also amassing 3,124 runs, with two centuries and 15 fifties, in his 86 Tests from 1973 to 1990.
At the time of his retirement, he held the world record for most Test wickets and was the first to reach the 400 milestone.
A former fast bowler who later modified his action to rely on swing, Hadlee was a pivotal presence in Nottinghamshire’s County Championship triumphs in 1981 and 1987.
Having taken out the world’s top one-day international side with Sunday’s historic win over England, the Saltires were looking to complete a remarkable double by toppling the number-one ranked Twenty20 nation.
But despite making a decent start with the ball at the Grange, they allowed the tourists to set a target of 205 before falling short in their run chase as they stuttered to 156 for six.
Bradburn refused to be too hard on his team just two days after seeing them become the first Scottish XI to ever beat the Auld Enemy.
But after seeing them miss a number of chances to turn up the heat on Pakistan, the head coach admitted their 48-run defeat was a reality check.
He said: “We’re gutted, which is a great sign of where our team is at. We backed ourselves to compete and win against the number one team in the world and we’re disappointed we didn’t manage that.
“It’s definitely encouraging that we were competitive for much of the match but we’re not just about competing. Whether it’s Namibia, Papua New Guinea, the Dutch or the number one team in the world, we want to extend our skills and push them to what is required to win games against the very best.
“So this is a brilliant example for us to experience.
“We were 50 runs short and I sense there was 30 runs in the bowling and 20 runs with the bat that we left out there. That’s the fine margins.”
Sunday’s six-run 50-over victory against England sparked wild celebrations but Bradburn insists it was a lack of practise in the shorter format which hampered his side and not a hangover from the weekend’s jubilant scenes.
“It wasn’t difficult at all to get the boys focused again,” said Bradburn, whose side will have a second chance to beat Pakistan when they face off again on Wednesday. “They have been on a high and rightly so. They’ve deserved all the accolades they’ve been receiving.
“I think the challenge for us was just to remember how to play this game because we haven’t played T20 since early 2017.
“We’ve been playing a bit of regional stuff and the guys love T20, but as you saw, if you’re just not quite sharp enough then in two or three overs you can fall well behind the game.”
Having taken out the world’s top one-day international side with Sunday’s historic win over the Auld Enemy, the Saltires were looking to complete a remarkable double by toppling the number-one ranked Twenty20 nation.
But Grant Bradburn’s men lacked the magic touch with the bat that they showed against the English as their run chase fizzled out, finishing on 156 for six in response to their opponents’ 204 for four.
There was a buoyant mood round the Grange following the Scots’ first victory of any kind against their neighbours.
And it looked promising again as the hosts got off to a reasonable start, with Ali Evans taking the scalps of Ahmed Shehzad (14) and Fakhar Zaman (21) before Richie Berrington dismissed Hussain Talat (18).
But they could have done with debutant spinner Hamza Tahir – cousin of Scottish record limited-overs wicket-taker Majid Haq – finding his feet at international level a bit quicker. As it was, the 22-year-old was given a bruising introduction as he was smashed for what turned out to be 57 costly runs off his four overs.
Having set a steady rate in the early stages, Pakistan put the foot down in the final five overs.
Captain Sarfraz Ahmed led the way as he racked up an impressive unbeaten 89 from just 49 balls, with Shoaib Malik grabbing 53 from 27 deliveries before Evans claimed his third wicket.
That left the Scots requiring a repeat show of the display which saw them run up a tally of 371 for five against England.
But this time the sparkle had gone.
Openers George Munsey and Kyle Coetzer made a decent start in reply, notching 50 runs from the first five overs.
But the introduction of Hasan Ali to the Pakistan attack provided the injection of pace they were looking for and when he removed Munsey for 25, the Scots looked in trouble.
With Calum MacLeod, Sunday’s star of the show with his 140 not out knock, trapped lbw by Shadab Khan for just 12, the fight quickly drifted out of the hosts’ showing.
However, the Scots will have a second attempt against the tourists, with the teams meeting again on Wednesday.