Table 3:

Detailed incidental findings in pooled studies39

No. Available (Studies)Rate % (No.)99% CIP (Heterogeneity)I²/Q Value
Normal variations
    Mega cisterna magna4428 (5)2.5 (116)0.8–7.4<.00178.0/22.7
    Cavum septum pellucidum5653 (5)2.2 (105)1.1–4.6.00771.4/14.0
    Empty sella3966 (1)0.2 (7)0.1–0.510/0
Cysts5938 (7)10.2 (1096)3.1–28.5<.00198.0/306.4
    Pineal5878 (6)2.3 (704)0.4–12.4<.00197.1/175.4
    Arachnoid4256 (3)2.2 (89)1.7–2.9.1052.8/6.4
    Choroid plexus4031 (2)0.4 (8)0.1–6.4.0475.6/4.1
    Porencephalic4143 (3)0.2 (4)0.1–0.6.0569.7/5.8
Ventricular dilation5656 (4)1.1 (46)0.1–12.4<.00195.5/65.9
Enlarged perivascular spaces175 (2)7.4 (24)0.1–93.9<.00193.6/15.5
Vascular anomalies
    Developmental venous anomaly4256 (3)1.6 (66)1.1–2.1.720/0.66
    Cavernoma3966 (1)0.2 (7)0.1–0.510/0
    Capillary telangiectasia3966 (1)0.1 (2)0–0.310/0
Developmental disorders
    Gray matter heterotopia4031 (2)0.5 (19)0.3–0.9.750/0.1
    Gray matter dysplasia3966 (1)0.1 (2)0–0.310/0
    Corpus callosum anomaly4143 (3)0.7 (7)0.1–15.1<.00190.3/20.5
    Chiari I malformation4263 (4)0.8 (32)0.5–1.3.0660.5/7.6
White matter hyperintensities4428 (5)1.9 (27)0.2–16.8<.00194.6/73.6
Neoplasm4368 (4)0.2 (9)0.1–0.6.3312.3/3.4