It was also concluded that this may show that penis size overall affects sexual satisfaction since women chose between the two options they were given.A study published in 2002, conducted at Groningen University Hospital, asked 375 sexually active women (who had recently given birth) the importance of penis size. The results showed that 21% of women felt length was important and 32% felt that girth was important.A study conducted at the Australian National University, published in early 2013, showed that penis size influences a mans sex appeal, and the taller the man, the bigger the effect. The study showed 3D computer generated images at life-size, altering the height and other physical attributes, with women typically registering preferences in under 3 seconds. A preference for taller mens larger penis size was indicated. A US study published in 2015 of the stated preferences of a panel of 75 women using 3D-printed models as scale references showed a preferred penis length of 16 cm (6.3 inches) and a preferred circumference of 12.2 cm for long-term sexual partners, with slightly larger preferred sizes of a length of 16.3 cm (6.4 inches) and circumference of 12.7 cm for one-time sexual encounters. According to the study, however, when asked to estimate the length of their partnerss penis, most women would say a size significantly smaller than what their partner was recorded to be. This suggests that perception of size is not entirely accurate. The visual impression of the size is not necessarily in correlation with the feeling in the vulva and vagina.
Pneumoretroperitoneum is the presence of air in the retroperitoneum. It is always a pathological condition and can be caused by a perforation of a retroperitoneal hollow organ such as the duodenum, colon or rectum. Pneumoretroperitoneum can best be identified by CT scan. See also
Pneumoperitoneum


== References ==