Fig. 3From: Intrasellar pressure in patients with pituitary adenoma – relation to tumour size and growth patternMean intrasellar pressure (ISP) in adenomas growing invasively in parasellar direction compared to non-invasive adenomas. Simple un-paired two-sided t-test. Adenomas with Knosp grade 3–4 (invasive) showed higher mean ISP (26.3 ± 9.4 mmHg) compared to adenomas with Knosp grade 0–2 (non-invasive), (21.9 ± 7.1 mmHg). (p = 0.0022)Back to article page