PMC3895046_01
Ultrasonography of the pelvis shows a 5 x 4.3 cm solid and an iso-echoic mass.
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Ultrasonography of the pelvis revealed a 5 x 4.3 cm, solid mass separated from her right adnexa (Fig. 1).
Contrast enhanced-CT shows a 5 x 4 cm solid, well-defined, heterogeneous mass in the right side of the pelvic cavity.
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Contrast enhanced-CT showed a 5 x 4 cm, solid, well-defined, heterogeneous mass in the right side of the pelvic cavity (Fig. 2).
MRI shows that the tumor is a homogeneous hypointensity on T1-weighted images (A) and a heterogeneous slight hyperintensity on T2-weighted images (B) in a right side of the pelvic cavity.
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MRI showed that the tumor demonstrated homogeneous hypointensity on T1-weighted images and heterogeneous slight hyperintensity on T2-weighted images (Fig. 3a and b).
Sagittal MRI sections show the mass to be intricately related to the anterior presacral fascia.
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Sagittal sections of MRI demonstrated that the mass was intricately related to the anterior presacral fascia (Fig. 4).
Laparoscopic findings of schwannoma in the pelvis. 1, schwannoma 2, right ureter 3, rectum 4, right iliac vessel.
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With careful dissection using sharp and blunt maneuvers, the mass was dissected from the neighboring vessels, such as the right internal iliac vessels and ureter (Fig. 5).
The specimen is an elastic hard, 5 x 4 cm mass with an integral envelope. On sectioning, it is yellow and white in color, predominantly solid with cystic change.
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On sectioning, it was yellow and white in color, predominantly solid with cystic change (Fig. 6).
Histologic findings of schwannoma in the pelvis (hematoxylin and eosin, x200). (A) The Antoni A pattern is composed of spindle cells arranged in intersection fascicles. Nuclear palisades are seen and mitoses are rarely observed. (B) The Antoni B pattern is composed of loose hypocellular tissue.
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Pathologic examination showed whorls and interlacing fascicles of schwannoma spindle cells, along with alternating Antoni-A and -B patterns with areas of hyalinization and fibrinoid degeneration (Fig. 7a and b).