Fig. 2From: Endobronchial angiofibroma in the aberrant tracheal bronchus presenting as spontaneous pneumomediastinuma Gross specimen containing a yellowish endobronchial mass in the right upper lobe (arrow). b Prominent small-to-medium-sized vessels with hyaline fibrosis in the walls and a complex mixture of stellate and staghorn blood vessels with a background of irregular fibrous stroma (haematoxylin and eosin stain, ×200)Back to article page