Fig. 2From: IgG4-related disease can present as recurrent spontaneous hemothorax: a case reportHistopathological features of the right parietal pleura. Dense fibrosis of the pleura extends into the fatty tissue, among lymphoplasmacytic infiltrates a lymphoid follicle can be seen. Small blood vessels are proliferated with lumen dilation and blood congestion. HE × 40Back to article page