The 82-year-old was reportedly sent to palliative care because he was no longer responding to chemotherapy treatment, however this was not formally confirmed.
He was admitted to the hospital on Tuesday, but his daughter later claimed there was "no surprise or emergency," and Pele added that it was just a "annual visit."
Pele, however, was reportedly receiving painkillers in an end-of-life care department, according to a story from the newspaper Folha de Sao Paulo.
Last year, Pele had surgery to remove a tumour from his colon, and ever since, he has been in and out of the hospital.
The Hospital Israelita Albert Einstein issued a short update on Pele's state of health following Saturday's reports.
It did not specifically reference the suggestions Pele was receiving palliative care, with the statement, referring to Pele by his full name, reading: "Edson Arantes do Nascimento was admitted to the Hospital Israelita Albert Einstein last Tuesday for a reassessment of the chemotherapy treatment for the colon tumour, identified in September 2021.
"He is still undergoing treatment and the state of health remains stable."
The hospital said Pele had also shown "a good response" to treatment for a respiratory infection, "with no worsening of the condition in the last 24 hours".
At the age of 17, Pele inspired Brazil to their first World Cup triumph in 1958 and he won the tournament twice more with the Selecao, in 1962 and 1970.
He remains the youngest scorer in a World Cup final, netting a double in Brazil's 5-2 win over hosts Sweden in 1958 at the age of 17 years and 249 days.
France striker Kylian Mbappe, England captain Harry Kane and Brazil forward Vinicius Junior were among the stars at the ongoing World Cup in Qatar who have sent messages of support to Pele on Saturday.
Brazil, who were sent a message of encouragement by Pele before the tournament began, face South Korea in the last 16 on Monday.