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Histology of the biopsy samples. (A) Neuroendoscopic biopsy specimen of the tumor in the pineal region revealing adenocarcinoma with a papillotubular pattern (hematoxylin and eosin, ×200). (B) Transbronchial biopsy specimen in the lung tumor revealing adenocarcinoma similar to the pineal region tumor (hematoxylin and eosin, ×200).
