PMC9941423_01
Perineal mass measuring 10 x 12 cm from one to six o'clock position around the perineum (outlined by red arrows).
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MRI of the pelvis T2-weighted images in (a) axial, (b) sagittal, and (c) coronal view demonstrating the perineal mass (red asterisks) compressing and displacing the vagina (pink arrows), and anus (yellow arrows).
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It appeared to be a tumor of mesenchymal origin with the differentials of liposarcoma [Figure 2].
A 10 x 12 cm irregular shaped tumor removed from the left perineum with attachment to the skin, but no local infiltration to bone and anal sphincter.
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The intraoperative finding was a 10 cm x 12 cm irregular border soft-tissue mass at the left perineal area with attachment to the overlying skin but no infiltration to adjacent bone and external anal sphincter [Figure 3].
Fascicles of spindle-shaped cells with varying cellularity and perivascular accentuation (hematoxylin and eosin stain, magnification = 100 x).
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The histopathological examination revealed a malignant spindle cell tumor with a clear 30 mm surgical margin and high-grade sarcoma [Figure 4].