PMC6554494_01
A CT scan of chest without contrast showed smooth well-defined mass measures 3.5 x 4.4 x 2.8 cm in size at the anterior portion of the left first rib.
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fig1
A CT scan of chest without contrast showed smooth well-defined mass measures 3.5 x 4.4 x 2.8 cm in size at the anterior portion of the left first rib but there was no associated bone abnormality (Fig. 1, Fig. 2, Fig. 3).
A sagittal plane of the CT scan of chest showing a smooth well-defined mass at the anterior apical portion of the left lung.
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A CT scan of chest without contrast showed smooth well-defined mass measures 3.5 x 4.4 x 2.8 cm in size at the anterior portion of the left first rib but there was no associated bone abnormality (Fig. 1, Fig. 2, Fig. 3).
A positron emission tomography (PET) scan showed a 1.8 cm nodule at left upper lobe that is non-fluorodeoxyglucose (FDG) avid.
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A positron emission tomography (PET) scan showed a 1.8 cm nodule at left upper lobe that is non-fluorodeoxyglucose (FDG) avid (Fig. 4).
Low power view shows uniform cellular tumor with intralesional blood vessels.
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The histopathogy examination revealed benign solitary fibrous tumor (Microscopic examination, low power view showed uniform cellular tumor with intralesional blood vessels (Fig. 5), higher power showed epithelioid cells and numerous angulated blood vessels (Fig. 6)).
Tumor cells are positive immunohistochemical stain CD34.
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Tumor cells were positive immunohistochemical stain CD34 (Fig. 7), negative for cytokeratin AE1/AE3, high molecular weight cytokeratin, S100, desmin, and CD117 (Fig. 8), there was no evidence of increase in mitotic figures and no necrosis was noted.
PMC6554494_02
A CT scan of the chest showing a 2 cm low attenuation mass at the superior aspect of left major fissure.
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CT scan of the chest with IV contrast was negative for pulmonary embolism (PE) but showed 2 cm low-attenuation mass at the superior aspect of left major fissure (Fig. 9).
A positron emission tomography (PET) scan showed a 1.9 cm nodule adjacent to the left major fissure that is non-fluorodeoxyglucose (FDG) avid.
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The patient underwent CT guided biopsy of the mass; PET scan showed a 1.9 cm nodule adjacent to the left major fissure that is non-FDG avid (Fig. 10).
Low power view shows cellular spindle cell neoplasm.
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Histopathology examination was consistent with benign solitary fibrous tumor (Microscopic examination, low power view showed cellular spindle cell neoplasm (Fig. 11), higher power showed monomorphic spindle cells (Fig. 12)).
Tumor cells are positive immunohistochemical stain CD34.
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Immunohistochemical stains showed that tumor cells were strongly positive for CD34 (Fig. 13), negative for Cytokeratin AE1/AE3, high molecular weight cytokeratin, S100, desmin, and CD117 (Fig. 14).