PMC5352885_01
Perineal mass prior to surgery.
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fig1
He described a slow-growing, painless mass, and he noticed it the first time 3 years ago (Figure 1).
CT scan showing a large smoothly marginated perineal mass with uniform soft-tissue attenuation.
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fig2
CT scan showed a bulky, lobulated, hypervascularized, and heterogenous mass in soft tissue of the perineum measuring 18.0 x 12.0 x 7.7 cm (860 cc) (Figure 2). CT of thorax, abdomen, and pelvis showed no other abnormalities.
Surgical incision.
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fig3
He was submitted to excision of the mass (Figures 3-5).
Perineum after mass resection.
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fig4
He was submitted to excision of the mass (Figures 3-5).
Perineum after mass resection.
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fig5
He was submitted to excision of the mass (Figures 3-5).
Surgical specimen.
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fig6
A nodular structure has been resected measuring 23.0 x 14.0 x 8.0 cm and weighting 1,170 g (Figures 6 and 7).
Surgical specimen.
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fig7
A nodular structure has been resected measuring 23.0 x 14.0 x 8.0 cm and weighting 1,170 g (Figures 6 and 7).
Hematoxylin and eosin-stained section.
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fig8
Based on morphological and immunohistochemical findings, a diagnosis of solitary fibrous tumor was determined (Figures 8-11).
Immunohistochemistry CD34.
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fig9
Based on morphological and immunohistochemical findings, a diagnosis of solitary fibrous tumor was determined (Figures 8-11).
Immunohistochemistry Ki67.
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fig10
Based on morphological and immunohistochemical findings, a diagnosis of solitary fibrous tumor was determined (Figures 8-11).
Immunohistochemistry STAT6.
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fig11
Based on morphological and immunohistochemical findings, a diagnosis of solitary fibrous tumor was determined (Figures 8-11).
CT scan done 1 year after resection: no evidence of recurrence.
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fig12
A control CT scan was done one year after resection showing no recurrence (Figure 12).
Perineal appearance after one year of tumor resection.
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fig13
The external appearance of perineum was excellent (Figure 13).