Presentation
Known renal cell cancer, for metastatic workup
Patient Data
Age: 45 years
Gender: Female
From the case:
Canonball lung metastasis
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Numerous bilateral lung nodules and masses are noted, suspicious for metastatic disease.
No effusion or pneumothorax.
From the case:
Canonball lung metastasis
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There are numerous well defined rounded bilateral lung nodules and masses measuring up to 6 x 4.5 cm containing areas of necrosis, compatible with lung metastasis (cannonball metastases). Dilated tortuous vessels are also noted within some of the masses, which raise the possibility of AV fistulas and shunting.
Case Discussion
The main differential diagnosis for cannonball type metastasis is choriocarcinoma and renal cell carcinoma (RCC). This case was metastasis from a known left clear cell RCC.
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