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 Indian J Med Microbiol  
 

Figure 1 (A-G): 35-year-old male with pleuropulmonary mucinous cystadenocarcinoma. (A) Initial chest radiogram showed a 10 × 13 cm, well-defi ned, elongated, and lobulated increased opacity (arrows) in the medial aspect of right hemithorax. (B, C) Coronal and axial contrast-enhanced CT images showed large, ovoid, non-enhancing low attenuation lesion (asterisk) in the right posterior hemithorax, with mild peripheral rim-like enhancement. Peribronchial consolidation was noted in adjacent lung parenchyma containing low attenuation area (black arrows in C) with focal communication (white arrows in C) into adjacent pleural space. There was subtle enhancing wall in the superior aspect of the cystic mass separating the mass from the remnant pleural space (arrowhead in B). (D) On histopathologic examination, most of the tumor was composed of dissecting mucin materials. The peripheral portion of the tumor showed mucinous epithelial cell nests with stratifi cation and mild nuclear atypism (inset) (Hematoxylin and Eosin staining). (E) Photomicroscopic image shows the tumor cells in fi brotic tissue. Mucinous material was attached to pleural fi brotic tissue (inset) (Hematoxylin and Eosin staining). (F) Postoperative follow-up CT revealed remnant subpleural multiloculated cystic lesion in RLL. (G) On the last follow-up, residual multiloculated cystic mass with mild septal enhancement in RLL increased

Figure 1 (A-G): 35-year-old male with pleuropulmonary mucinous cystadenocarcinoma. (A) Initial chest radiogram showed a 10 × 13 cm, well-defi ned, elongated, and lobulated increased opacity (arrows) in the medial aspect of right hemithorax. (B, C) Coronal and axial contrast-enhanced CT images showed large, ovoid, non-enhancing low attenuation lesion (asterisk) in the right posterior hemithorax, with mild peripheral rim-like enhancement. Peribronchial consolidation was noted in adjacent lung parenchyma containing low attenuation area (black arrows in C) with focal communication (white arrows in C) into adjacent pleural space. There was subtle enhancing wall in the superior aspect of the cystic mass separating the mass from the remnant pleural space (arrowhead in B). (D) On histopathologic examination, most of the tumor was composed of dissecting mucin materials. The peripheral portion of the tumor showed mucinous epithelial cell nests with stratifi cation and mild nuclear atypism (inset) (Hematoxylin and Eosin staining). (E) Photomicroscopic image shows the tumor cells in fi brotic tissue. Mucinous material was attached to pleural fi brotic tissue (inset) (Hematoxylin and Eosin staining). (F) Postoperative follow-up CT revealed remnant subpleural multiloculated cystic lesion in RLL. (G) On the last follow-up, residual multiloculated cystic mass with mild septal enhancement in RLL increased