Calls are being made for a 'super-charging' of cancer screening services as COVID-19 restrictions are lifted.
It comes as figures reveal no mammograms were carried out in the month of April.
There was also a 96% decrease in the number of samples sent to CervicalCheck labs during that same month.
The Marie Keating Foundation says it understands why some services were paused in the early stages of the COVID-19 response.
However, they're now calling for a roadmap for when services can resume safely, and "in particular what the capacity will be and what prioritisation will be given to those who may have had screening or follow up testing delayed".
Fianna Fáil's Health Spokesperson Stephen Donnelly, meanwhile, says a major awareness campaign will be needed to prevent an increase in future cancer cases.
He said: "We really need to supercharge the cancer services across the board now.
"As soon as NPHET say it's possible, we need all of the screening services open.
"We also need a massive campaign to encourage everyone in the country, if they have any concerns, to go to their GP."
Deputy Donnelly warned that "we are staring down the barrel of a crisis in cancer treatment" and therefore any public awareness campaign should be "stepped up a few gears".
HSE CEO Paul Reid this morning said he is concerned about the knock-on effect of the current crisis on cancer patients and those with other illnesses.
He noted that cancer and cardio services would be prioritised as officials begin to scale-up hospital services again.
However, he warned that hospital capacity will have to be kept to about 80% due to the uncertainties posed by COVID-19.
