PMC9537756_01
Enhanced MRI image of the patient: soft tissue shadow (indicated by arrow) measuring approximately 1.5 x 1.8 cm can be seen in the hepatic hilum. T1 image: the tumor appears as a slightly low-signal-intensity mass.
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F1
Figure 1 presents the T1 image and Figure 2 presents the T2 image, and the location of the swelling is indicated with a red arrow.
Enhanced MRI image of the patient: soft tissue shadow (indicated by the arrow) measuring approximately 1.5 x 1.8 cm can be seen in the hepatic hilum. T2 image: the tumor appears as a slightly high-signal-intensity mass.
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F2
Figure 1 presents the T1 image and Figure 2 presents the T2 image, and the location of the swelling is indicated with a red arrow.
In the patient's tissue specimen, the tumor is located in the hilar bile duct, the tumor is lipoma-like, and the tumor measures approximately 1.5 x 1.8 cm.
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F3
The tumor was located in the hilum and presented with yellow fat with an intact envelope (Figure 3).
There are four bile duct openings in the hepatic hilum after the resection of the bile duct tumor; the middle two are bile duct openings of the caudate lobe, and the ones on the left and right are the left and right bile duct openings. Two silicone tubes were placed in the two bile ducts of the caudate lobe to prevent closure of the bile ducts.
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F4
First, the four separated bile duct openings were intermittently stitched together with 5-0 prolene sutures (Figure 4).
Tumor pathological HE staining pictures: fibroblasts with striae-like proliferation with interstitial collagenization and infiltration of lymphocytes and plasma cells (magnification, x40).
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F5
Postoperative pathology identified the hepatic nodule as a hemangioma and revealed that the hilar mass presented with storiform hyperplasia of fibroblasts with interstitial collagen and infiltrating plasma cells and lymphocytes, which are consistent with the presentation of IMT (Figure 5).
A photomicrograph of immunohistochemistry staining of the lesion. Tumor cells were positive for smooth muscle actin. Smooth muscle of blood vessels acted as an internal positive control. (magnification, x100).
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F6
Figure 6 shows positive staining for smooth muscle actin, and Figure 7 shows positive staining for Ki67 in tumor cells.
A photomicrograph of immunohistochemistry staining of the lesion. The expression of Ki67 in tumor cells is about 5%. (magnification, x100).
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F7
Figure 6 shows positive staining for smooth muscle actin, and Figure 7 shows positive staining for Ki67 in tumor cells.
Timeline of symptoms, treatment, and prognosis in our case.
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F8
The timeline of the patient's symptoms, treatment, and prognosis in our case is shown in Figure 8.