The phrase "slight progression" is correct and can be used in written English.
It is typically used when describing a small or minor advancement or improvement in a situation or condition. Example: Despite some setbacks, there has been a slight progression in the company's profits over the past year. In this sentence, "slight progression" is used to describe a minor increase in the company's profits.
Four patients' tumors became smaller after treatment and one patient has slight progression at the time of last followup.
Once activity returned to the main island of Surtsey, lava from Surtur I and its satellite vents, from August 1966 to April 1967, showed a slight progression back to more evolved compositions (MgO = 11.69 − 9.17 wt %, K2O = 0.33 − 0.49 wt %), but the last lava sampled in May 1967 was then the most magnesian in the suite (MgO = 11.82 wt % K2O = 0.35 wt %).
"There are companies that have shown great electric vehicles… but while these companies inspire us what they are doing is a slight progression of where we've been before".
Eleven months after the irradiation, the sacral lesion showed slight progression with worsening of pain, and the second course of heavy ion irradiation (60.0 GyE/12 Fr) was administered.
France's annual report on racism has revealed that after a four-year downward trend, the country's "tolerance index" has shown "a slight progression towards more tolerance".
Guitarist Johnny Ramone relates: "We recorded them in the order they were written; we wanted to show a slight progression in song structure".
The occluder was inserted through a small incision into the ECA and was gently advanced into the ICA, until a drop in CBF of 75% or greater associated with a slight thread progression resistance was observed.
Release kinetics revealed an initial peak in the release of C14-ZOL with a slight further progression over the following weeks.
The lung carcinoma was initially surgically treated, but relapsed to the mediastinum 17 months later, when the chordoma seemed to undergo slight secondary progression on Imatinib.
In the following days and weeks, only a slight further progression of CPM took place, indicating that approximately 90% of C14-ZOL had been released in an initial peak within the first 24 hours.
Genes for reduced susceptibility were observed by Derde, et al. [ 9] and the incidence showed a slight non-significant progression between Phase I and Phase III of their trials (14 of 110 isolates to 16 of 113 isolates).
