The phrase "a decrease in lesion size" is correct and usable in written English.
It can be used in medical or scientific contexts when discussing the reduction of the size of a lesion, often in relation to treatment outcomes.
Example: "After several weeks of treatment, the patient showed a significant decrease in lesion size, indicating a positive response to therapy."
Alternatives: "a reduction in lesion size" or "a shrinkage of the lesion".
The patient with PD was the only one without a decrease in lesion size.
In this study, all patients with SD had a decrease in lesion size, meaning that the treatment had a beneficial effect.
Local radiation therapy induces a decrease in lesion size and a central necrosis.
They found a decrease in lesion size from 26 cm to 12 cm at an average of 12 years follow up (no statistical analysis reported) [ 35] (Table 4).
It has been shown that necrosis measurements allowed significantly earlier detection of response relative to size criteria (World Health Organization and RECIST) because necrosis usually occurs shortly after treatment and before there is a decrease in lesion size.
Local radiation therapy of focal complex deposits induces a rapid decrease in the soft tissue extension and appearance of necrotic central areas within the deposit followed by a decrease in lesion size [ 44].
Response was evaluated as the time to "improvement", as defined by any decrease in lesion size, lesion number, or edema.
For evaluation of response, "improvement" was defined as any decrease in lesion size, lesion number, or lesion-associated edema noted in the clinical charts, to reflect AIDS Clinical Trials Group (ACTG) KS response criteria [17].
Another possibility is a potential partial volume effect; a significant decrease in lesion size means that many small metastases have to be segmented.
In vivo treatment with DETC in BALB/C mice infected with Leishmania braziliensis caused a significant decrease in lesion size (p<0.0001), paralleled by a 100-fold decrease (p = 0.0087) in parasite burden.
The VETF scores of total area of vitiligo lesions decreased from 5.91 to 5.56, a decrease of 0.36 (P = 0.102) on the VETF, translating to a 6% decrease in lesion size.
