case_images: PMC8025045_01
case_images: (A, B) Contrast-enhanced CT shows right RCC before nephrectomy. (C, D) Non-enhanced CT shows multiple right pleural tumors with pleural effusion. (E, F) Non-enhanced CT shows rapid growth of the pleural mass after one month.
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case_images: We encountered a 69-year-old man who had localized right pleural metastases after undergoing nephrectomy in September 2017 for right RCC (8.0 x 7.0 x 7.0 cm), clinical stage 3, clear cell type histology, grade 2 (Fig. 1, Fig. 2A-2C). At this time, CT scan revealed right pleural effusion and multiple pleural masses (Fig. 1C and D).
case_images: Histopathologic examinations of kidney and pleural specimens show primary and metastatic clear cell carcinoma. (A) Macroscopic image of the excised kidney tumor. (B): Hematoxylin-Eosin (H&E) staining of the kidney, x 40. (C): H&E staining of the kidney, x 200. (D) Macroscopic image of the excised pleural tumor. (E) H&E staining of the pleura, x 40. (F) H&E staining of the pleura, x 200.
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case_images: F). Finally, we performed intrathoracic tumor resection under general anesthesia and diagnosed histologically as pleural metastasis from clear cell type RCC (Fig. 2D-F).
case_images: Thoracoscopic shows multiple hemorrhagic soft encapsulated tumors.
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case_images: Thoracoscopy showed multiple reddish, soft, bleeding encapsulated tumors (Fig. 3).