Table 1.

Characteristics of the study population (n = 81)

Gender (male/female)	46/35
Age at the surgery - median (range)	40 yrs. (22–68)a
Surgical procedures - total	90
TPC only on the right side	26
TPC only on the left side	18
TPC bilaterally	6
LPC only on the right side	11
LPC only on the left side	17
LPC bilaterally	8
TPC on the left and LPC on the right	4

TPC total pleural covering, LPC lower pleural covering. ^aSince seven patients underwent TPC or LPC bilaterally, and two patients underwent TPC on the left and LPC on the right, a total of 90 surgeries were used for calculations