Double-mutant invasive mucinous adenocarcinoma of the lung in a 32-year-old male patient: A case report

Figure 1 A chest radiograph showed severe left hydrothorax.

Figure 2 Chest computed tomography demonstrated multiple nodules on left visceral pleura (indicated by orange arrows) and part of atelectasis in the left lower lung (showed by the blue arrow).

Figure 3 Thoracoscopy revealed visceral pleura almost full of nodular, cauliflower-like protrusions of various sizes.

Figure 4 Immunohistochemical analysis showed that the tumor cells were positive for cytokeratin, cytokeratin 5/6, carcinoembryonic antigen, thyroid transcription factor-1 and Ki-67. A: Cytokeratin; B: Cytokeratin 5/6, C: Carcinoembryonic antigen; D: Thyroid transcription factor-1; E: Ki-67.