Table III.

Findings on magnetic resonance imaging

Data	Symmetric enlargement	Thickened pituitary stalk	Contrast enhancement	Sella mass or suprasellar extension	Loss of posterior pituitary hyperintensity	Cystic appearance	Chiasmal compression	Cavernous sinus compression	Central pituitary necrosis	Dural tail sign
Number of literature reports involved	13	13	10	12	9	6	6	3	2	2
Events	176	197	144	178	84	28	52	5	12	7
Total number of cases	290	296	206	282	150	144	136	29	48	74
Combined incidence	0.6	0.58	0.63	0.58	0.5	0.17	0.38	0.17	0.24	0.09
95% CI	0.46–0.74	0.41–0.74	0.49–0.77	0.41–0.74	0.32–0.68	0.09–0.24	0.30–0.46	0.03–0.30	–0.17–0.65	0.03–0.16