case_images: PMC10822930_01
case_images: Timeline of different treatments and disease status.
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case_images: We show the treatment timeline in  Figure 1 .
case_images: CT of the lungs before and after palliative chemotherapy. (A) CT after 17 months of first-line treatment: an approximately 4 mm diameter solid nodular shadow was seen in the right upper lung posterior segment. (B) CT after palliative chemotherapy: no significant shadows or nodules were seen in both lungs.
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case_images: Meanwhile, computed tomography (CT) showed a 4 mm solid nodule in the posterior segment of the upper lobe of the right lung (small nodule of 4 mm, not amenable to biopsy) ( Figure 2 ). After receiving 8 cycles of palliative chemotherapy and targeted therapy (bevacizumab, 7.5 mg/kg, d0 + albumin paclitaxel, 175 mg/m2, d1 + cisplatin, 75 mg/m2, d2-3, q21d) from Sep 2020 to Mar 2021, the patient achieved a CR in the abdominal wall metastasis and lung metastasis ( Figure 2 ).
case_images: 3D printed templates guide interstitial brachytherapy. (A) 3D printed molds of the patient's inguinal region. (B) Three-dimensional conformal dose assessment.
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case_images: This is a single hypofractionated radiotherapy that utilizes a high dose rate (HDR) of Ir-192 radioisotope for interstitial brachytherapy. we performed it using a microSelectron v3 after-loader (Elekta, Holland) with a planning system of oncentra 4.5.  Figure 3  shows the 3D printed molds and three-dimensional conformal dose assessment for interstitial brachytherapy.
case_images: MRI of the inguinal region before and after interstitial brachytherapy. (A) MRI at the end of the palliative chemotherapy. (B) MRI of the inguinal region 3 months after interstitial brachytherapy. (C) MRI of the inguinal region 1 year after interstitial brachytherapy.
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case_images: Meanwhile, follow-up MRI (from Jun 16, 2021, to Sep 20, 2023) confirmed that the bilateral inguinal lymph nodes had not shown progression after showing shrinkage.  Figure 4  shows the MRI of the patient before and after interstitial brachytherapy in the inguinal region.