case_images: PMC10756670_01
case_images: CT scan. (A) shows a mass of cystic low-density shadow on the right side of the ischiorectal fossa. (B) shows enhanced scanning of the cyst wall, and segmentations showed mild enhancement.
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case_images: f1
case_images: Imaging examination: Computed tomography (CT) showed that there was a mass of cystic low-density shadow on the right side of the ischiorectal fossa, and the mass was approximately 6.95 cmx7.79 cm, with segmentations visible inside ( Figure 1A ). There was adjacent ischium bone destruction, and the adjacent rectum and vagina were pushed to the left ( Figure 1B ).
case_images: MRI. (A) is T1, and (B) is T2. (C) shows DWI images with high signals. (D) shows the sagittal position of the T2 fat suppression sequence.
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case_images: f2
case_images: T1 and T2 signal shadows in the right ischiorectal fossa. The main body of the lesion showed equal T1 and long T2 signal shadows, and small patches of shorter T1 and equal T2 signal shadows were visible ( Figures 2A, B ). Diffusion-weighted imaging (DWI) and apparent diffusion coefficient (ADC) images showed a high signal ( Figure 2C ). The adjacent soft tissues showed a grid-like high signal in the fat suppression sequence ( Figure 2D ).
case_images: Pathology. (A) is a general observation, and (B) is a section observation. (C) shows the needle biopsy, and some spindle cells were visible. (D) is HEx100.
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case_images: f3
case_images: All the changes pointed to the diagnosis of EMC ( Figures 3C, D ). Subsequently, a needle biopsy of the tumor was performed, and the results showed that some spindle cells were visible ( Figures 3C, D ). At this point, exploration confirmed complete separation of the tumor from the surrounding tissues, and the tumor was completely excised ( Figures 3A, B ).
case_images: The follow-up results in 18 months after surgery. (A), (B) show the CT results after 1 month. (C), (D) show the CT results after 6 months. (E), (F) show the MRI results after 18 months. In the imaging examination results during the 18-month follow-up after surgery, no recurrence or metastasis was observed.
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case_images: f4