2016
DOI: 10.2169/internalmedicine.55.7155
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A Rupture of a Lung Metastatic Lesion of Colon Cancer, Leading to Pneumothorax Caused by Bevacizumab

Abstract: The patient was a 57-year-old man who was diagnosed with multiple lung metastases of sigmoid colon cancer. The patient developed progressive disease after 8 courses of bevacizumab + capecitabine and oxaliplatin therapy, therefore, bevacizumab + irinotecan, leucovorin, and 5-fluorouracil therapy was started. During the fifth course, he experienced pain on the left side of his chest. On computed tomography, bleeding from the pulmonary metastatic lesions was suspected. Two days later, a pneumothorax was detected.… Show more

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Cited by 10 publications
(16 citation statements)
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“…In this case, air was observed inside part of the lung metastases; therefore, the second mechanism (formation of bronchopleural fistulas secondary to tumor necrosis) was considered to be involved in the onset of pneumothorax. Pneumothorax has also been reported in association with other molecular-targeted drugs, including sunitinib for renal cell cancer [ 8 ], pazopanib for soft tissue sarcoma [ 9 ], and bevacizumab for colon cancer or breast cancer [ 10 , 11 ]. These patients also had lung metastasis, and the mechanism of onset was similar to our case.…”
Section: Discussionmentioning
confidence: 99%
“…In this case, air was observed inside part of the lung metastases; therefore, the second mechanism (formation of bronchopleural fistulas secondary to tumor necrosis) was considered to be involved in the onset of pneumothorax. Pneumothorax has also been reported in association with other molecular-targeted drugs, including sunitinib for renal cell cancer [ 8 ], pazopanib for soft tissue sarcoma [ 9 ], and bevacizumab for colon cancer or breast cancer [ 10 , 11 ]. These patients also had lung metastasis, and the mechanism of onset was similar to our case.…”
Section: Discussionmentioning
confidence: 99%
“…Bevacizumab has a substantial number of side effects, including bleeding, high blood pressure, heart failure, proteinuria, thrombosis, and gastrointestinal (GI) perforation [6]. Pneumothorax has rarely been reported as a complication of bevacizumab [7][8][9][10][11][12][13]. The mechanism underlying the development of pneumothorax after bevacizumab therapy is not clear.…”
Section: Introductionmentioning
confidence: 99%
“…Furthermore, VEGF is known to be associated with recurrence and prognosis, and its inhibition is an important factor for treatment . Bevacizumab specifically binds to VEGF‐A and inhibits its binding to VEGF receptor (VEGFR)‐1 and VEGFR‐2, thereby inhibiting VEGF signal transduction . In colorectal cancer, many patients present with advanced disease or develop metastases within the first years after curative surgery, and bevacizumab has contributed to meaningful improvements in survival in patients with advanced colorectal cancer in recent years .…”
Section: Introductionmentioning
confidence: 99%