Key result
CT-enhanced imaging of clear cell tumor of the lung revealed a small vessel extending along and partially wrapping one side of the mass, a feature that may help differentiate it from other neoplasms.
Case Report (n=2)
CCTL is a rare benign primary lung tumor where CT imaging showing a small vessel extending along and partially wrapping the mass may aid in differentiation.
CT enhancement patterns may aid rare CCTL diagnosis; extends limited case literature but leaves standardized criteria open.
BACKGROUND: Clear cell tumor of the lung (CCTL) is a rare and mostly benign pulmonary tumor arising from perivascular epithelioid cells. We reported 2 cases of CCTL in a 24-year-old man with chest pain and a 59-year-old man with dyspnea. METHODS: Their chest CT images revealed a well-defined, homogeneous nodule located in the peripheral region of lung parenchyma. The solid nodule showed intense heterogenous postcontrast enhancement in the arterial phase and a homogenous appearance in the venous phase. The two patients underwent thoracotomy, and pathological examinations, including immunohistochemical studies revealed that both cases were benign clear cell tumors. RESULTS: Due to the fact that only a few cases about CCTL were reported, clinicopathological aspects and radiological characteristics of this type of tumor are not well established. CONCLUSION: CCTL is a rare and benign primary tumor and majorly occurs in middle-aged and elder people. The finding of a small vessel extending along and partially wrapping up one side of the mass in the CT-enhanced images might be a helpful feature to differentiate CCTL from other lung neoplasms.
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Qian et al. (2016) conducted a case report in Clear cell tumor of the lung (n=2). CT imaging and thoracotomy was evaluated on Clinicopathological and radiological characteristics. CT-enhanced imaging of clear cell tumor of the lung revealed a small vessel extending along and partially wrapping one side of the mass, a feature that may help differentiate it from other neoplasms.
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