The phrase "late diagnosis" is correct and usable in written English.
For example, you could use it in a sentence like this: "The patient's late diagnosis led to a poor prognosis for recovery."
Half the disparity comes down to late diagnosis.
Perhaps the biggest red flag is a late diagnosis.
Late diagnosis leads to tens of thousands of avoidable deaths in the UK each year.
But the late diagnosis meant the cancer spread to her spine and is now incurable.
Late diagnosis is far from unusual and can have dire consequences.
The main obstructions are late diagnosis, tumor metastasis, drug resistance, and recurrence.
Late diagnosis of breast cancer is sometimes down to women delaying going to see their doctor, sure.
Due to her late diagnosis she had two and a half years of a silent, unsigning world.
Loriato, L. B. et al. Late diagnosis of dentoalveolar ankylosis: impact on effectiveness and efficiency of orthodontic treatment.
Another concern is late diagnosis.
Late diagnosis does not preclude normal renal function.
