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Microscopic features: mucosa with respiratory-type epithelium (fat arrow), vascularized submucosa (horizontal arrow), well-defined hamartoma (thin arrows), myxoid fibrovascular tissue of hamartoma (double arrow) (H-EX100), hondromyxoid lobules (hooked arrow) admixed with adipocytes (thin arrow), and separated by fibrous septa (double arrow) (H-EX400).
