The phrase "abnormality in four" is grammatically correct and can be used in written English.
It can be used in contexts where you are discussing a specific abnormality that is related to the number four, such as in a medical, statistical, or analytical context.
Example: "The study revealed an abnormality in four of the ten subjects, indicating a potential pattern worth investigating further."
Alternatives: "irregularity in four" or "anomaly in four".
Mammography failed to identify an abnormality in four patients (24%%), presumably due to overlapping dense breast parenchyma obscuring potential findings.
Moreover, in 46 subjects with IGT, an abnormality in four of five cardiovascular reflex tests, a greater heart rate variability, and increased heat detection thresholds have been shown recently (16).
MR detected an abnormality in five patients (8%) in whom CT was negative.
Ten patients (13%) had only one abnormality in their PCs, and for these, BM-lymphocytes had the same abnormality in three of them (30%).
The colposcopic evaluation of all five TCA cases excluded any cervical abnormality in three women with normal or borderline Pap smears.
Likewise, amplification of the 14q32 was detected in 23 (14%) patients with BM-lymphocytes bearing the same abnormality in two (9%) of them.
T2w-MRC diagnosed the abnormality in six (40%%) of these patients, whereas combined T2w-MRC and CE-MRC images detected the abnormality in 12 patients (80%%; P < 0.05; Fig. 3a, c).
Combined routine T2w-MRC and CE-MRC images achieved to demonstrate extravasation in 11 of these patients (84.6 %; P < 0.05), whereas T2w-MRC failed to identify the abnormality in seven patients (false-negative rate, 53.8 %; Fig. 1a-c).
Multivariate linear regression analysis was used to identify independent contributions of site ischaemia (diffusion and/or perfusion abnormality in seven Brodmann areas in language cortex), age, total volume of infarct (on diffusion-weighted imaging), and total volume of hypoperfusion (on perfusion-weighted imaging).
Head CT scans showed no abnormalities in four patients, and formerly known strokes for 5.
Brain imaging revealed periventricular white-matter abnormalities in four.
