Study had found that pleural invasion involving the pleural surface presented worse prognosis than involvement beyond the elastic layer but still within the
visceral pleura (7).
These lesions mainly originate from the
visceral pleura and rarely occur outside the pleura, but they can occur in any part of the body.
Report for every sample should include the following: site (segment from which the sample comes), size (2 maximum diameters in perpendicular directions assessed at the microscope), "central sampling" (mainly bronchial with cartilage plates identified or bronchiolar structures in greater than 40% of the surface of the sample), "peripheral sampling" (with or without
visceral pleura, with alveoli present in at least 60% of the surface of the sample), and histologic pattern (respiratory bronchiolitis, desquamative interstitial pneumonia, NSIP, organizing pneumonia, UIP, capillaritis, among others).
The
visceral pleura was markedly thickened by a layer of fibrin associated with neutrophils (Figure 1E).
These include spontaneous rupture of subpleural blebs, necrosis of implants on
visceral pleura with resultant air leakage, prostaglandin-induced bronchiolar constriction or bronchial obstruction by endometrial implants, resulting in alveolar rupture, and finally, leakage of air from the genital tract through congenital or acquired defects in the diaphragm.
The base of the tumor is on the
visceral pleura in about three quarters of the patients.
Patients with any of
visceral pleura, parietal pleura, or chest wall involvement were evaluated as having pleural invasion.
The parietal pleura is adherent to the inner surface of the thoracic cavity and the
visceral pleura is a delicate membrane covering the underlying lung tissue.
Solitary fibrous tumor is an uncommon spindle cell tumor which arise mostly from the
visceral pleura. With an incidence of less than 3 per 100000 hospital patients and less than 1000 cases described in the literature, it accounts for almost 5% of all pleural tumors [8].
The delicate dissection had objectified thickened
visceral pleura. The cystectomy was successfully performed without rupture and the piece was sent to the parasitology laboratory with evidence of proliferative membrane (macroscopically) and alive scolex in the intracystic fluid (microscopically) (Figure 4).
Diffuse pleural thickening is defined as a uni- or bilateral thickening of the
visceral pleura, at least 5 mm in thickness and involving at least one third of the affected lung surface.
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.
visceral pleura - pleura that covers the lungs