Presence of Central Nonenhancement Correlates With Tumor Exophyticity

There are a total of 119 patients with both exophyticity and CNE (0=No, 1=Yes) data available for analysis.

CNE vs Exophyticity

CNE distribution within each exophytic category is summarized in Table 1.

Table 1: CNE distribution by exophytic category.

Exophyticity Category	N	CNE Yes	CNE No	CNE (%)
0% (Endophytic)	4	1	3	25.0
<50% Exophytic	26	14	12	53.8
>50% Exophytic	89	67	22	75.3

A logistic regression model was fitted to estimate the effect size of exophyticity on the odds of having CNE. Table 2 summarizes the results.

Table 2: Logistic regression effect size estimation for CNE by exophyticity.

Effect	OR	95% CI	p-value
Per-category increase in exophyticity	2.76	(1.34, 5.97)	0.0073