1.Descemet Membrane Endothelial Keratoplasty after Penetrating Keratoplasty Graft Failure
Woo Young SON ; Min Ji HA ; Woong Joo WHANG ; Yong-Soo BYUN ; Hyung Bin HWANG ; Kyung Sun NA ; Chang Rae RHO ; Hyun Soo LEE ; So Hyang CHUNG ; Eun Chul KIM ; Yang Kyung CHO ; Hyun Seung KIM ; Ho Sik HWANG
Journal of the Korean Ophthalmological Society 2021;62(6):848-854
Purpose:
To report a case of a successful secondary Descemet membrane endothelial keratoplasty in failed penetrating keratoplasty. Case summary: A 46-year-old male with keratoconus in both of his eyes underwent penetrating keratoplasty in his right eye 30 years ago and in his left eye 14 years ago. From one and a half year ago, the patient’s visual acuity decreased in his left eye due to graft failure. For treatment, secondary Descemet membrane endothelial keratoplasty was performed. Partial detachment of Descemet membrane was observed at 13 days after the operation, and an additional air injection was performed. At 8 months after the operation, the patient’s uncorrected visual acuity improved to 0.5 and the cornea maintained its clearance without rejection.
Conclusions
Secondary Descemet membrane endothelial keratoplasty was successfully performed in a patient with failed penetrating keratoplasty.
2.Repeat Descemet Membrane Endothelial Keratoplasty after Descemet Membrane Endothelial Keratoplasty Graft Failure
Gee-Hyun KIM ; Min Ji HA ; Dong Jin CHANG ; Woong Joo WHANG ; Yong-Soo BYUN ; Hyung Bin HWANG ; Kyung Sun NA ; Chang Rae RHO ; Hyun Soo LEE ; So Hyang CHUNG ; Eun Chul KIM ; Yang Kyung CHO ; Hyun Seung KIM ; Man Soo KIM ; Ho Sik HWANG
Journal of the Korean Ophthalmological Society 2021;62(5):702-708
Purpose:
To report a case of secondary Descemet membrane endothelial keratoplasty (DMEK) for graft failure after primary DMEK.Case summary: A 47-year-old female underwent primary DMEK in her left eye with a diagnosis of Fuchs’ endothelial dystrophy. At 6 weeks later, corneal stromal edema with epithelial and subepithelial bullae was first observed. From that point on, the condition of the cornea and the visual acuity continued to degrade. After 7 months, a second DMEK procedure (i.e., a repeat DMEK) for graft failure was performed successfully without any complications. Since the second procedure, the cornea has been clear, and the best-corrected visual acuity has remained at 0.6 for 8 months.
Conclusions
To manage graft failure after primary DMEK, we performed a second DMEK procedure. The removal of the previous graft was easy, and there were no complications. Thus, repeat DMEK may be a feasible procedure.
3.Descemet Membrane Endothelial Keratoplasty after Penetrating Keratoplasty Graft Failure
Woo Young SON ; Min Ji HA ; Woong Joo WHANG ; Yong-Soo BYUN ; Hyung Bin HWANG ; Kyung Sun NA ; Chang Rae RHO ; Hyun Soo LEE ; So Hyang CHUNG ; Eun Chul KIM ; Yang Kyung CHO ; Hyun Seung KIM ; Ho Sik HWANG
Journal of the Korean Ophthalmological Society 2021;62(6):848-854
Purpose:
To report a case of a successful secondary Descemet membrane endothelial keratoplasty in failed penetrating keratoplasty. Case summary: A 46-year-old male with keratoconus in both of his eyes underwent penetrating keratoplasty in his right eye 30 years ago and in his left eye 14 years ago. From one and a half year ago, the patient’s visual acuity decreased in his left eye due to graft failure. For treatment, secondary Descemet membrane endothelial keratoplasty was performed. Partial detachment of Descemet membrane was observed at 13 days after the operation, and an additional air injection was performed. At 8 months after the operation, the patient’s uncorrected visual acuity improved to 0.5 and the cornea maintained its clearance without rejection.
Conclusions
Secondary Descemet membrane endothelial keratoplasty was successfully performed in a patient with failed penetrating keratoplasty.
4.Repeat Descemet Membrane Endothelial Keratoplasty after Descemet Membrane Endothelial Keratoplasty Graft Failure
Gee-Hyun KIM ; Min Ji HA ; Dong Jin CHANG ; Woong Joo WHANG ; Yong-Soo BYUN ; Hyung Bin HWANG ; Kyung Sun NA ; Chang Rae RHO ; Hyun Soo LEE ; So Hyang CHUNG ; Eun Chul KIM ; Yang Kyung CHO ; Hyun Seung KIM ; Man Soo KIM ; Ho Sik HWANG
Journal of the Korean Ophthalmological Society 2021;62(5):702-708
Purpose:
To report a case of secondary Descemet membrane endothelial keratoplasty (DMEK) for graft failure after primary DMEK.Case summary: A 47-year-old female underwent primary DMEK in her left eye with a diagnosis of Fuchs’ endothelial dystrophy. At 6 weeks later, corneal stromal edema with epithelial and subepithelial bullae was first observed. From that point on, the condition of the cornea and the visual acuity continued to degrade. After 7 months, a second DMEK procedure (i.e., a repeat DMEK) for graft failure was performed successfully without any complications. Since the second procedure, the cornea has been clear, and the best-corrected visual acuity has remained at 0.6 for 8 months.
Conclusions
To manage graft failure after primary DMEK, we performed a second DMEK procedure. The removal of the previous graft was easy, and there were no complications. Thus, repeat DMEK may be a feasible procedure.
5.Clinical outcome and predictive factors for docetaxel and epirubicin neoadjuvant chemotherapy of locally advanced breast cancer
Hye Sung WON ; Yong Seok KIM ; Jeong Soo KIM ; Eun Deok CHANG ; Sae Jung NA ; In Yong WHANG ; Dong Soo LEE
The Korean Journal of Internal Medicine 2020;35(6):1489-1496
Background/Aims:
We evaluated the efficacy of docetaxel and epirubicin as neoadjuvant chemotherapy in locally advanced breast cancer and assessed the predictive factors for response to neoadjuvant chemotherapy and prognostic factors related to relapse-free survival.
Methods:
Forty patients who received docetaxel and epirubicinas neoadjuvant chemotherapy for locally advanced breast cancer were evaluated retrospectively. Neoadjuvant chemotherapy consisted of intravenous injection of 75 mg/m2 docetaxel and 60 mg/m2 epirubucin on day 1, every 21 days, and two to six cycles.
Results:
Twenty-five (62.5%) patients showed a partial response, and 15 (37.5%) patients showed a stable disease in the first response evaluation after two or three cycles of neoadjuvant chemotherapy. In the second response evaluation of nine patients who received six cycles of neoadjuvant chemotherapy, one patient achieved a complete response, but two patients with hormone receptor-negative, human epidermal growth factor receptor 2-positive breast cancer experienced disease progression. Twenty-five (62.5%) patients experienced downstaging after neoadjuvant chemotherapy. Patients with > 20% pretreatment Ki-67 and decrease of Ki-67 between pre- and post-neoadjuvant chemotherapy showed a trend for better response. In multivariate analysis, advanced pathological stage showed a significant negative effect on relapse-free survival.
Conclusions
Docetaxel and epirubicin neoadjuvant chemotherapy showed a good response in locally advanced breast cancer. Pretreatment Ki-67 and change of Ki-67 may play a role as predictive factor for response to neoadjuvant chemotherapy.
6.Descemet Membrane Endothelial Keratoplasty to Treat Graft Failure after Descemet Stripping Endothelial Keratoplasty
Si Eun OH ; Min Ji HA ; Woong Joo WHANG ; Yong-Soo BYUN ; Hyung Bin HWANG ; Kyung Sun NA ; Chang Rae RHO ; Hyun Soo LEE ; So-Hyang CHUNG ; Eun Chul KIM ; Yang Kyung CHO ; Hyun Seung KIM ; Man Soo KIM ; Ho Sik HWANG
Journal of the Korean Ophthalmological Society 2020;61(12):1532-1537
Purpose:
We report a case of secondary Descemet membrane endothelial keratoplasty (DMEK) to treat graft failure after Descemet stripping endothelial keratoplasty (DSEK).Case summary: A 66-year-old female underwent DSEK of her right eye to treat pseudophakic bullous keratopathy that developed after cataract surgery and intraocular lens exchange. After 5 years, she complained of decreased vision; graft failure was observed. Secondary DMEK was performed; no additional air injection was needed. The corrected visual acuity was 0.2, 3 months after surgery, and the cornea became clear.
Conclusions
Visual recovery can be achieved by performing secondary DMEK after primary DSEK graft failure.
7.Descemet Membrane Endothelial Keratoplasty to Treat Graft Failure after Descemet Stripping Endothelial Keratoplasty
Si Eun OH ; Min Ji HA ; Woong Joo WHANG ; Yong-Soo BYUN ; Hyung Bin HWANG ; Kyung Sun NA ; Chang Rae RHO ; Hyun Soo LEE ; So-Hyang CHUNG ; Eun Chul KIM ; Yang Kyung CHO ; Hyun Seung KIM ; Man Soo KIM ; Ho Sik HWANG
Journal of the Korean Ophthalmological Society 2020;61(12):1532-1537
Purpose:
We report a case of secondary Descemet membrane endothelial keratoplasty (DMEK) to treat graft failure after Descemet stripping endothelial keratoplasty (DSEK).Case summary: A 66-year-old female underwent DSEK of her right eye to treat pseudophakic bullous keratopathy that developed after cataract surgery and intraocular lens exchange. After 5 years, she complained of decreased vision; graft failure was observed. Secondary DMEK was performed; no additional air injection was needed. The corrected visual acuity was 0.2, 3 months after surgery, and the cornea became clear.
Conclusions
Visual recovery can be achieved by performing secondary DMEK after primary DSEK graft failure.
8.PTEN Mutation Identified in Patient Diagnosed with Simultaneous Multiple Cancers.
Hye Sung WON ; Eun Deok CHANG ; Sae Jung NA ; In Yong WHANG ; Dong Soo LEE ; Sun Hyong YOU ; Yong Seok KIM ; Jeong Soo KIM
Cancer Research and Treatment 2019;51(1):402-407
PTEN hamartoma tumor syndrome is a spectrum of disorders characterized by unique phenotypic features including multiple hamartomas caused by mutations of the tumor suppressor gene PTEN. Cowden syndrome and Bannayan–Riley–Ruvalcaba syndrome are representative diseases, and both have several common clinical features and differences. Because PTEN mutations are associated with an increased risk of malignancy including breast, thyroid, endometrial, and renal cancers, cancer surveillance is an important element of disease management. We report a germline mutation of the PTEN (c.723dupT, exon 7) identified in a young woman with a simultaneous occurrence of breast cancer, dermatofibrosarcoma protuberans, and follicular neoplasm. This case suggests that it is critical for clinicians to recognize the phenotypic features associated with these syndromes to accurately diagnose them and provide preventive care.
Breast
;
Breast Neoplasms
;
Dermatofibrosarcoma
;
Disease Management
;
Exons
;
Female
;
Genes, Tumor Suppressor
;
Germ-Line Mutation
;
Hamartoma
;
Hamartoma Syndrome, Multiple
;
Humans
;
Kidney Neoplasms
;
Thyroid Gland
9.Bacillus Calmette-Guérin (BCG)-Cell Wall Skeleton as Immunotherapeutic Option for BCG-Refractory Superficial Bladder Cancer
Young Mi WHANG ; Da Hyeon YOON ; Gwang Yong HWANG ; Young Wook CHOI ; In Ho CHANG
Korean Journal of Urological Oncology 2019;17(2):88-95
Although intravesical instillation of Mycobacterium bovis bacillus Calmette-Guérin (BCG) is the most successful cancer immunotherapy for superficial bladder cancer, the serious side effects are frequently arisen by using live mycobacteria. To allow less toxic and more potent immunotherapeutic agents following intravesical BCG treatment for superficial bladder cancer, noninfectious immunotherapeutic drug instead of live BCG would be highly desirable. Recently, immune-enhancing adjuvants are considered an effective vaccine immunotherapy for cancer, providing enhanced antitumor effects and boosted immunity. The BCG-cell wall skeleton (BCG-CWS), the main immune active center of BCG, is a potent candidate as a noninfectious immunotherapeutic drug instead of live BCG against bladder cancer. However, the most limited application for anticancer therapy, it is difficult to formulate a water-soluble BCG-CWS due to the aggregation of BCG-CWS in both aqueous and nonaqueous solvents. To overcome the insolubility and improve the internalization of BCG-CWS into bladder cancer cells, it should be developed the lipid nanoparticulation of BCG-CWS, resulting in improved dispensability, stability, and small size. In addition, powerful technology of delivery systems should be applied to enhance the internalization of BCG-CWS, such as encapsulated into lipid nanoparticles using novel packaging methods. Here, we describe the progress in research on effects of BCG-CWS for cancer immunotherapy, development of lipid-based solvent, and packaging method using nanoparticles with drug delivery system.
Administration, Intravesical
;
Bacillus
;
Cell Wall Skeleton
;
Drug Delivery Systems
;
Immunotherapy
;
Methods
;
Mycobacterium bovis
;
Nanoparticles
;
Product Packaging
;
Skeleton
;
Solvents
;
Urinary Bladder Neoplasms
;
Urinary Bladder
10.A huge necrotic liver mass in a 45-year-old woman: delayed hepatic metastasis of a gastrointestinal stromal tumor.
In Yong WHANG ; Kyung Jin SEO ; Hee Yeon KIM ; Chang Wook KIM ; Hye Sung WON
The Korean Journal of Internal Medicine 2017;32(2):378-379
No abstract available.
Female
;
Gastrointestinal Stromal Tumors*
;
Humans
;
Liver*
;
Middle Aged*
;
Neoplasm Metastasis*

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