1.Radiologic evolution of biopsy-proven acute interstitial nephritis: a multimodal imaging case report
Euljo JEONG ; Bong Soo PARK ; Il Hwan KIM ; Jung Hee SON ; Kyung Han NAM ; Yoon Ho LEE ; Yoo Jin LEE
Kosin Medical Journal 2025;40(1):72-79
This report presents radiologic changes after clinical improvement in a patient with acute interstitial nephritis (AIN). A 45-year-old female patient was referred for decreased renal function. Eight months prior, she had undergone hysterectomy and received chemotherapy. At the start of chemotherapy, her baseline creatinine level was 0.55 mg/dL, which rose to 1.46 mg/dL. Multiple imaging modalities performed when decreased renal function was observed revealed bilateral renal enlargement with increased cortical attenuation on computed tomography (CT), cortical hyperechogenicity on ultrasonography, and diffusion restriction in the renal cortices on magnetic resonance imaging. A renal biopsy was performed, and AIN was diagnosed. Follow-up laboratory tests showed that kidney function had improved to normal levels, and CT at that time showed a reduction in the size of both kidneys. Radiologic changes can serve as clues for the diagnosis of AIN. This is the first report to confirm radiological changes after the clinical improvement of AIN, thereby providing novel information about the course of AIN.
2.Clinical outcomes of esophageal squamous cell carcinoma in patients aged over 80 years
Dae Gon RYU ; Cheol Woong CHOI ; Su Jin KIM ; Su Bum PARK ; Jin Ook JANG ; Bong Soo SON
The Korean Journal of Internal Medicine 2025;40(2):230-242
Background/Aims:
The clinical outcomes and optimal treatment of esophageal squamous cell carcinoma (ESCC) in elderly patients are unclear. This study aimed to assess the clinical outcomes of ESCC in patients aged ≥ 80 years.
Methods:
Medical records of patients diagnosed with ESCC between December 2008 and February 2024 were retrospectively reviewed. In total, 479 patients with ESCC were included and divided into the elderly (n = 52) and younger (n = 427) groups based on age. The clinical outcomes and survival rates, according to treatment, were compared between the two groups.
Results:
The median ages of the two groups were 82 years (range, 80–95 yr) and 66 years (41–79 yr). The overall survival was slightly lower in the elderly group; however, no statistical significance (hazard ratio [HR] 1.27, 95% confidence interval [CI] 0.85−1.91; p = 0.238) was observed. No differences were observed in the outcomes or survival between the two groups according to the treatment method (surgery, chemoradiotherapy or radiotherapy alone, and endoscopic resection). The elderly group was more likely to receive no treatment for cancer (30.8% vs. 13.6%, p = 0.002) than the younger group. However, when there was no treatment for cancer in the elderly group, survival was significantly lower than when treatment was administered (HR 0.08, 95% CI 0.03−020; p < 0.001).
Conclusions
In patients with ESCC aged ≥ 80 years, active cancer treatment was beneficial, and the results did not differ from those of younger patients.
3.Innovative Approaches in Tracheal Resection and Anastomosis Surgery: Integrating Extracorporeal Membrane Oxygenation for Enhanced Safety
Joohyung SON ; Bong Soo SON ; Jong Myung PARK ; Jeong Su CHO ; Yeongdae KIM ; Hoseok I ; Do Hyung KIM
Yonsei Medical Journal 2025;66(5):289-294
Purpose:
Tracheal resection with end-to-end anastomosis (TREE) has many advantages over conservative treatment in terms of long-term results; however, this method requires improved safety and accessibility. We aimed to combine expanded venovenous extracorporeal membrane oxygenation (ECMO) during TREE surgery.
Materials and Methods:
Between May 2006 and December 2022, 41 patients diagnosed with tracheal stenosis or tracheal tumors underwent TREE. The non-ECMO and ECMO groups were classified based on the presence or absence of intraoperative ECMO support.
Results:
Reconstruction length was slightly longer in the ECMO group than in the non-ECMO group, but there was no statistical significance (p=0.082). There was no significant difference between the two groups in terms of operative time (p=0.698), estimated blood loss (p=0.210), and duration of mechanical ventilation (p=0.713). There was a significant difference in intensive care unit stay between the two groups (p=0.013) due to the postoperative maintenance of ECMO. There were no cases of early mortality in either group during hospitalization (p>0.999).
Conclusion
ECMO support could assist in more challenging cases as it makes surgery easier in difficult patient scenarios.
4.Radiologic evolution of biopsy-proven acute interstitial nephritis: a multimodal imaging case report
Euljo JEONG ; Bong Soo PARK ; Il Hwan KIM ; Jung Hee SON ; Kyung Han NAM ; Yoon Ho LEE ; Yoo Jin LEE
Kosin Medical Journal 2025;40(1):72-79
This report presents radiologic changes after clinical improvement in a patient with acute interstitial nephritis (AIN). A 45-year-old female patient was referred for decreased renal function. Eight months prior, she had undergone hysterectomy and received chemotherapy. At the start of chemotherapy, her baseline creatinine level was 0.55 mg/dL, which rose to 1.46 mg/dL. Multiple imaging modalities performed when decreased renal function was observed revealed bilateral renal enlargement with increased cortical attenuation on computed tomography (CT), cortical hyperechogenicity on ultrasonography, and diffusion restriction in the renal cortices on magnetic resonance imaging. A renal biopsy was performed, and AIN was diagnosed. Follow-up laboratory tests showed that kidney function had improved to normal levels, and CT at that time showed a reduction in the size of both kidneys. Radiologic changes can serve as clues for the diagnosis of AIN. This is the first report to confirm radiological changes after the clinical improvement of AIN, thereby providing novel information about the course of AIN.
5.Clinical outcomes of esophageal squamous cell carcinoma in patients aged over 80 years
Dae Gon RYU ; Cheol Woong CHOI ; Su Jin KIM ; Su Bum PARK ; Jin Ook JANG ; Bong Soo SON
The Korean Journal of Internal Medicine 2025;40(2):230-242
Background/Aims:
The clinical outcomes and optimal treatment of esophageal squamous cell carcinoma (ESCC) in elderly patients are unclear. This study aimed to assess the clinical outcomes of ESCC in patients aged ≥ 80 years.
Methods:
Medical records of patients diagnosed with ESCC between December 2008 and February 2024 were retrospectively reviewed. In total, 479 patients with ESCC were included and divided into the elderly (n = 52) and younger (n = 427) groups based on age. The clinical outcomes and survival rates, according to treatment, were compared between the two groups.
Results:
The median ages of the two groups were 82 years (range, 80–95 yr) and 66 years (41–79 yr). The overall survival was slightly lower in the elderly group; however, no statistical significance (hazard ratio [HR] 1.27, 95% confidence interval [CI] 0.85−1.91; p = 0.238) was observed. No differences were observed in the outcomes or survival between the two groups according to the treatment method (surgery, chemoradiotherapy or radiotherapy alone, and endoscopic resection). The elderly group was more likely to receive no treatment for cancer (30.8% vs. 13.6%, p = 0.002) than the younger group. However, when there was no treatment for cancer in the elderly group, survival was significantly lower than when treatment was administered (HR 0.08, 95% CI 0.03−020; p < 0.001).
Conclusions
In patients with ESCC aged ≥ 80 years, active cancer treatment was beneficial, and the results did not differ from those of younger patients.
6.Innovative Approaches in Tracheal Resection and Anastomosis Surgery: Integrating Extracorporeal Membrane Oxygenation for Enhanced Safety
Joohyung SON ; Bong Soo SON ; Jong Myung PARK ; Jeong Su CHO ; Yeongdae KIM ; Hoseok I ; Do Hyung KIM
Yonsei Medical Journal 2025;66(5):289-294
Purpose:
Tracheal resection with end-to-end anastomosis (TREE) has many advantages over conservative treatment in terms of long-term results; however, this method requires improved safety and accessibility. We aimed to combine expanded venovenous extracorporeal membrane oxygenation (ECMO) during TREE surgery.
Materials and Methods:
Between May 2006 and December 2022, 41 patients diagnosed with tracheal stenosis or tracheal tumors underwent TREE. The non-ECMO and ECMO groups were classified based on the presence or absence of intraoperative ECMO support.
Results:
Reconstruction length was slightly longer in the ECMO group than in the non-ECMO group, but there was no statistical significance (p=0.082). There was no significant difference between the two groups in terms of operative time (p=0.698), estimated blood loss (p=0.210), and duration of mechanical ventilation (p=0.713). There was a significant difference in intensive care unit stay between the two groups (p=0.013) due to the postoperative maintenance of ECMO. There were no cases of early mortality in either group during hospitalization (p>0.999).
Conclusion
ECMO support could assist in more challenging cases as it makes surgery easier in difficult patient scenarios.
7.Radiologic evolution of biopsy-proven acute interstitial nephritis: a multimodal imaging case report
Euljo JEONG ; Bong Soo PARK ; Il Hwan KIM ; Jung Hee SON ; Kyung Han NAM ; Yoon Ho LEE ; Yoo Jin LEE
Kosin Medical Journal 2025;40(1):72-79
This report presents radiologic changes after clinical improvement in a patient with acute interstitial nephritis (AIN). A 45-year-old female patient was referred for decreased renal function. Eight months prior, she had undergone hysterectomy and received chemotherapy. At the start of chemotherapy, her baseline creatinine level was 0.55 mg/dL, which rose to 1.46 mg/dL. Multiple imaging modalities performed when decreased renal function was observed revealed bilateral renal enlargement with increased cortical attenuation on computed tomography (CT), cortical hyperechogenicity on ultrasonography, and diffusion restriction in the renal cortices on magnetic resonance imaging. A renal biopsy was performed, and AIN was diagnosed. Follow-up laboratory tests showed that kidney function had improved to normal levels, and CT at that time showed a reduction in the size of both kidneys. Radiologic changes can serve as clues for the diagnosis of AIN. This is the first report to confirm radiological changes after the clinical improvement of AIN, thereby providing novel information about the course of AIN.
8.Clinical outcomes of esophageal squamous cell carcinoma in patients aged over 80 years
Dae Gon RYU ; Cheol Woong CHOI ; Su Jin KIM ; Su Bum PARK ; Jin Ook JANG ; Bong Soo SON
The Korean Journal of Internal Medicine 2025;40(2):230-242
Background/Aims:
The clinical outcomes and optimal treatment of esophageal squamous cell carcinoma (ESCC) in elderly patients are unclear. This study aimed to assess the clinical outcomes of ESCC in patients aged ≥ 80 years.
Methods:
Medical records of patients diagnosed with ESCC between December 2008 and February 2024 were retrospectively reviewed. In total, 479 patients with ESCC were included and divided into the elderly (n = 52) and younger (n = 427) groups based on age. The clinical outcomes and survival rates, according to treatment, were compared between the two groups.
Results:
The median ages of the two groups were 82 years (range, 80–95 yr) and 66 years (41–79 yr). The overall survival was slightly lower in the elderly group; however, no statistical significance (hazard ratio [HR] 1.27, 95% confidence interval [CI] 0.85−1.91; p = 0.238) was observed. No differences were observed in the outcomes or survival between the two groups according to the treatment method (surgery, chemoradiotherapy or radiotherapy alone, and endoscopic resection). The elderly group was more likely to receive no treatment for cancer (30.8% vs. 13.6%, p = 0.002) than the younger group. However, when there was no treatment for cancer in the elderly group, survival was significantly lower than when treatment was administered (HR 0.08, 95% CI 0.03−020; p < 0.001).
Conclusions
In patients with ESCC aged ≥ 80 years, active cancer treatment was beneficial, and the results did not differ from those of younger patients.
9.Innovative Approaches in Tracheal Resection and Anastomosis Surgery: Integrating Extracorporeal Membrane Oxygenation for Enhanced Safety
Joohyung SON ; Bong Soo SON ; Jong Myung PARK ; Jeong Su CHO ; Yeongdae KIM ; Hoseok I ; Do Hyung KIM
Yonsei Medical Journal 2025;66(5):289-294
Purpose:
Tracheal resection with end-to-end anastomosis (TREE) has many advantages over conservative treatment in terms of long-term results; however, this method requires improved safety and accessibility. We aimed to combine expanded venovenous extracorporeal membrane oxygenation (ECMO) during TREE surgery.
Materials and Methods:
Between May 2006 and December 2022, 41 patients diagnosed with tracheal stenosis or tracheal tumors underwent TREE. The non-ECMO and ECMO groups were classified based on the presence or absence of intraoperative ECMO support.
Results:
Reconstruction length was slightly longer in the ECMO group than in the non-ECMO group, but there was no statistical significance (p=0.082). There was no significant difference between the two groups in terms of operative time (p=0.698), estimated blood loss (p=0.210), and duration of mechanical ventilation (p=0.713). There was a significant difference in intensive care unit stay between the two groups (p=0.013) due to the postoperative maintenance of ECMO. There were no cases of early mortality in either group during hospitalization (p>0.999).
Conclusion
ECMO support could assist in more challenging cases as it makes surgery easier in difficult patient scenarios.
10.Radiologic evolution of biopsy-proven acute interstitial nephritis: a multimodal imaging case report
Euljo JEONG ; Bong Soo PARK ; Il Hwan KIM ; Jung Hee SON ; Kyung Han NAM ; Yoon Ho LEE ; Yoo Jin LEE
Kosin Medical Journal 2025;40(1):72-79
This report presents radiologic changes after clinical improvement in a patient with acute interstitial nephritis (AIN). A 45-year-old female patient was referred for decreased renal function. Eight months prior, she had undergone hysterectomy and received chemotherapy. At the start of chemotherapy, her baseline creatinine level was 0.55 mg/dL, which rose to 1.46 mg/dL. Multiple imaging modalities performed when decreased renal function was observed revealed bilateral renal enlargement with increased cortical attenuation on computed tomography (CT), cortical hyperechogenicity on ultrasonography, and diffusion restriction in the renal cortices on magnetic resonance imaging. A renal biopsy was performed, and AIN was diagnosed. Follow-up laboratory tests showed that kidney function had improved to normal levels, and CT at that time showed a reduction in the size of both kidneys. Radiologic changes can serve as clues for the diagnosis of AIN. This is the first report to confirm radiological changes after the clinical improvement of AIN, thereby providing novel information about the course of AIN.

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