Primary pulmonary meningioma: A case report and review of the literature

Table 3 Clinical and imaging characteristics of primary pulmonary meningioma patients

Variables		Number	Ratio (%)
Gender (n = 50)	Female	31	62.0
	Male	19	38.0
Age (n = 50)	≤ 40 yr	4	8.0
	40–60 yr	26	52.0
	≥ 60 yr	20	40.0
Symptoms (n = 50)	No	35	70.0
	Yes	15	30.0
Size (n = 50)	≤ 3 cm	37	74.0
	> 3 cm	13	26.0
Histology (n = 50)	Benign	45	90.0
	Malignant	5	10.0
Site (n = 47)	RL	15	31.9
	RU	6	12.8
	LL	10	21.3
	LU	13	27.7
	Other	3	6.4
Location (n = 45)	Peripheral	36	80.0
	Centrilobar	9	20.0
Main CT features (n = 38)	Well-circumscribed	27	71.1
	Lobulated	5	13.2
	Burrs	2	5.3
	Ground-glass density	2	5.3
	Calcification	2	5.3
PET/CT (n = 12)	High uptake	8	66.7
	Low uptake	4	33.3

RL: Right lower lobe; RU: Right upper lobe; LL: Left lower lobe; LU: Left upper lobe.