Fluid can also enter the pleural space from the interstitial spaces of the lung via the
visceral pleura or from the peritoneal cavity via small holes in the diaphragm.
In practice, more peripheral lung tissue, including
visceral pleura itself, is not infrequently encountered (Figures 6 and 7).
In IPS( also known as intralobar pulmonary sequestration), the sequestrated portion is located within a normal lung lobe and lacks its own
visceral pleura while in EPS (also known as extralobar pulmonary sequestration), the sequestrated portion is located outside the normal lung parenchyma and has its own
visceral pleura.
Although pulmonary vessels should not extend beyond the
visceral pleura, lung tissue superimposed upon a pneumothorax, particularly at the base, may conceal the pneumothorax save for the presence of a white visceral pleural interface.
2) Additionally, rupture of these blebs, apical cysts, and pneumatoceles may damage the
visceral pleura causing a spontaneous secondary pneumothorax.
sup][36] Because of the mechanism of pneumothorax, the movement of the
visceral pleura on the parietal pleura cannot be seen because they fill with air.
A typical sign of an ultrasound evaluation is the line of intersection of the parietal pleura with the
visceral pleura, generated with each breathing cycle; this is called lung sliding and is associated with the breathing cycle movements.
Gas can enter the pleural space through an opening in the
visceral pleura from inside the lungs, or through a communication between the pleural space and the atmosphere through the chest wall and parietal pleura.
There have only been two reported cases of desmoid tumours originating from the
visceral pleura or pulmonary parenchyma.
Since KS tends to involve only the
visceral pleura, closed pleural biopsy is often non-diagnostic and the diagnosis requires thoracoscopy with the characteristic multiple cherry-red to purple appearance of the KS lesions on the
visceral pleura.
Cysts in pleural fissures were indeed attached by a thin pedicle to the
visceral pleura (1, 2).
Pathology revealed metastatic poorly differentiated adenocarcinoma consistent with ovarian cancer involving the diaphragm, liver, and
visceral pleura.
visceral pleura - pleura that covers the lungs