Presentation
Respiratory discomfort on exertion.
Patient Data
huge well-circumscribed, smooth, and lobulated soft tissue mass lesion occupying the right hemithorax containing scattered calcifications
tumor enhances heterogeneously and has internal low-attenuation areas due to cystic/necrotic changes
dilated tortuous engorged intratumoral vessels
The patient underwent a right hemithorax mass core needle biopsy and histopathology is consistent with a solitary fibrous tumor.
Case Discussion
Solitary fibrous tumor is a rare type of tumor that originates from the mesenchymal cells. It can range from a slow-growing tumor to a more aggressive mass. This type of tumor usually occurs in people between the ages of 60 to 70. In approximately 80% of cases, it develops from the visceral pleura, and around 30% of solitary fibrous tumors that arise from the pleura are malignant 1,2.
The main differential diagnoses include localized mesothelioma, solitary pleural metastasis, pleural lymphoma, peripheral lung cancer, and intercostal nerve neurilemoma (schwannoma).
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