Stevens-Johnson syndrome (SJS) and acute generalized exanthematous pustulosis (AGEP) are 2 distinct entities that can overlap within the spectrum of severe cutaneous adverse reaction (SCAR). AGEP is a self-limiting and drug-induced eruption characterized by sudden onset of sterile pustules, erythema, and sometimes fever. SJS, in contrast, is a severe form of SCAR that causes blistering and necrosis of the skin and mucosal membranes, often leading to significant morbidity and mortality. However, there are cases where patients may present with symptoms that overlap between AGEP and SJS, making it challenging to differentiate the 2 conditions. This report describes a 70-year-old male with nontuberculous mycobacterium tenosynovitis in the left hand, coinfected with methicillin-resistant coagulase-negative Staphylococcus and Klebsiella oxytoca. After administration of additional antibiotics, the patient developed fever and erythematous macules with purpuric centers on the trunk and the extremities. Further examination revealed marked leukocytosis and elevated C-reactive protein levels. Skin biopsy histopathology showed subcorneal intraepidermal pustule formation with neutrophil infiltration. The patient’s clinical course improved after cessation of the culprit drugs and treatment with a high-dose systemic steroid. This case highlights the rare occurrence of SJS/AGEP overlap and underscores the importance of prompt diagnosis and appropriate management of these SCAR.

Purpose: To evaluate the efficacy and toxicities of skin-directed radiotherapy (RT) in primary cutaneous T-cell lymphoma (CTCL). Materials and Methods: We retrospectively analyzed 57 CTCL lesions treated with skin-directed RT between January 2000 and December 2022. Lesions were categorized into three distinct groups: early-stage disease treated with local RT, advanced-stage disease treated with local RT, and advanced-stage disease treated with total skin electron beam therapy (TSEBT). Treatment outcomes, including response rates, recurrence patterns, and local progression probability, were assessed for each group. Results: Mycosis fungoides (MF) constituted 90.9% of the advanced-stage pathologies, while CD4+ primary cutaneous small/medium T-cell lymphoproliferative disorder was common in the early stage lesions (55%). Median RT doses were 30.6 Gy, 27 Gy, and 32 Gy for the local RT with early stage, the local RT with advanced stage, and TSEBT with advanced stage, respectively. The complete response rates were high across the groups: 95.5%, 70.8%, and 90.9%, respectively. Seven local recurrences (29.2%) occurred in the local RT group with advanced stage, while seven patients (63.6%) in the TSEBT group experienced local failure. All recurrences were observed in lesions and patients with MF. Acute toxicities were mainly grade 1 or 2, with no grade 3 or higher events. No significant association between RT dose and local progression rates in MF lesions was found. Conclusion Skin-directed RT in CTCL is effective for local control and well-tolerated with less toxicity.

Stevens-Johnson syndrome (SJS) and acute generalized exanthematous pustulosis (AGEP) are 2 distinct entities that can overlap within the spectrum of severe cutaneous adverse reaction (SCAR). AGEP is a self-limiting and drug-induced eruption characterized by sudden onset of sterile pustules, erythema, and sometimes fever. SJS, in contrast, is a severe form of SCAR that causes blistering and necrosis of the skin and mucosal membranes, often leading to significant morbidity and mortality. However, there are cases where patients may present with symptoms that overlap between AGEP and SJS, making it challenging to differentiate the 2 conditions. This report describes a 70-year-old male with nontuberculous mycobacterium tenosynovitis in the left hand, coinfected with methicillin-resistant coagulase-negative Staphylococcus and Klebsiella oxytoca. After administration of additional antibiotics, the patient developed fever and erythematous macules with purpuric centers on the trunk and the extremities. Further examination revealed marked leukocytosis and elevated C-reactive protein levels. Skin biopsy histopathology showed subcorneal intraepidermal pustule formation with neutrophil infiltration. The patient’s clinical course improved after cessation of the culprit drugs and treatment with a high-dose systemic steroid. This case highlights the rare occurrence of SJS/AGEP overlap and underscores the importance of prompt diagnosis and appropriate management of these SCAR.

Stevens-Johnson syndrome (SJS) and acute generalized exanthematous pustulosis (AGEP) are 2 distinct entities that can overlap within the spectrum of severe cutaneous adverse reaction (SCAR). AGEP is a self-limiting and drug-induced eruption characterized by sudden onset of sterile pustules, erythema, and sometimes fever. SJS, in contrast, is a severe form of SCAR that causes blistering and necrosis of the skin and mucosal membranes, often leading to significant morbidity and mortality. However, there are cases where patients may present with symptoms that overlap between AGEP and SJS, making it challenging to differentiate the 2 conditions. This report describes a 70-year-old male with nontuberculous mycobacterium tenosynovitis in the left hand, coinfected with methicillin-resistant coagulase-negative Staphylococcus and Klebsiella oxytoca. After administration of additional antibiotics, the patient developed fever and erythematous macules with purpuric centers on the trunk and the extremities. Further examination revealed marked leukocytosis and elevated C-reactive protein levels. Skin biopsy histopathology showed subcorneal intraepidermal pustule formation with neutrophil infiltration. The patient’s clinical course improved after cessation of the culprit drugs and treatment with a high-dose systemic steroid. This case highlights the rare occurrence of SJS/AGEP overlap and underscores the importance of prompt diagnosis and appropriate management of these SCAR.

Purpose: To evaluate the efficacy and toxicities of skin-directed radiotherapy (RT) in primary cutaneous T-cell lymphoma (CTCL). Materials and Methods: We retrospectively analyzed 57 CTCL lesions treated with skin-directed RT between January 2000 and December 2022. Lesions were categorized into three distinct groups: early-stage disease treated with local RT, advanced-stage disease treated with local RT, and advanced-stage disease treated with total skin electron beam therapy (TSEBT). Treatment outcomes, including response rates, recurrence patterns, and local progression probability, were assessed for each group. Results: Mycosis fungoides (MF) constituted 90.9% of the advanced-stage pathologies, while CD4+ primary cutaneous small/medium T-cell lymphoproliferative disorder was common in the early stage lesions (55%). Median RT doses were 30.6 Gy, 27 Gy, and 32 Gy for the local RT with early stage, the local RT with advanced stage, and TSEBT with advanced stage, respectively. The complete response rates were high across the groups: 95.5%, 70.8%, and 90.9%, respectively. Seven local recurrences (29.2%) occurred in the local RT group with advanced stage, while seven patients (63.6%) in the TSEBT group experienced local failure. All recurrences were observed in lesions and patients with MF. Acute toxicities were mainly grade 1 or 2, with no grade 3 or higher events. No significant association between RT dose and local progression rates in MF lesions was found. Conclusion Skin-directed RT in CTCL is effective for local control and well-tolerated with less toxicity.

Purpose: This study aimed to assess the real-world clinical outcomes of consolidative durvalumab in patients with unresectable locally advanced non–small cell lung cancer (LA-NSCLC) and to explore the role of radiotherapy in the era of immunotherapy. Materials and Methods: This retrospective study assessed 171 patients with unresectable LA-NSCLC who underwent concurrent chemoradiotherapy (CCRT) with or without consolidative durvalumab at Asan Medical Center between May 2018 and May 2021. Primary outcomes included freedom from locoregional failure (FFLRF), distant metastasis-free survival (DMFS), progression-free survival (PFS), and overall survival (OS). Results: Durvalumab following CCRT demonstrated a prolonged median PFS of 20.9 months (p=0.048) and a 3-year FFLRF rate of 57.3% (p=0.008), compared to 13.7 months and 38.8%, respectively, with CCRT alone. Furthermore, the incidence of in-field recurrence was significantly greater in the CCRT-alone group compared to the durvalumab group (26.8% vs. 12.4%, p=0.027). While median OS was not reached with durvalumab, it was 35.4 months in patients receiving CCRT alone (p=0.010). Patients positive for programmed cell death ligand 1 (PD-L1) expression showed notably better outcomes, including FFLRF, DMFS, PFS, and OS. Adherence to PACIFIC trial eligibility criteria identified 100 patients (58.5%) as ineligible. The use of durvalumab demonstrated better survival regardless of eligibility criteria. Conclusion The use of durvalumab consolidation following CCRT significantly enhanced locoregional control and OS in patients with unresectable LA-NSCLC, especially in those with PD-L1–positive tumors, thereby validating the role of durvalumab in standard care.

Background/Aims: Potassium channel tetramerization domain containing 17 (KCTD17) protein, an adaptor for the cullin3 (Cul3) ubiquitin ligase complex, has been implicated in various human diseases; however, its role in hepatocellular carcinoma (HCC) remains elusive. Here, we aimed to elucidate the clinical features of KCTD17, and investigate the mechanisms by which KCTD17 affects HCC progression. Methods: We analyzed transcriptomic data from patients with HCC. Hepatocyte-specific KCTD17 deficient mice were treated with diethylnitrosamine (DEN) to assess its effect on HCC progression. Additionally, we tested KCTD17-directed antisense oligonucleotides for their therapeutic potential in vivo. Results: Our investigation revealed the upregulation of KCTD17 expression in both tumors from patients with HCC and mouse models of HCC, in comparison to non-tumor controls. We identified the leucine zipper-like transcriptional regulator 1 (Lztr1) protein, a previously identified Ras destabilizer, as a substrate for KCTD17-Cul3 complex. KCTD17-mediated Lztr1 degradation led to Ras stabilization, resulting in increased proliferation, migration, and wound healing in liver cancer cells. Hepatocyte-specific KCTD17 deficient mice or liver cancer xenograft models were less susceptible to carcinogenesis or tumor growth. Similarly, treatment with KCTD17-directed antisense oligonucleotides (ASO) in a mouse model of HCC markedly lowered tumor volume as well as Ras protein levels, compared to those in control ASO-treated mice. Conclusions KCTD17 induces the stabilization of Ras and downstream signaling pathways and HCC progression and may represent a novel therapeutic target for HCC.

Objective: While the association between depression and frailty in the elderly population has been investigated, the psychological factors that mediate such a relationship remain unknown. The identification of psychological factors in interventions for depression treatment in the elderly may assist in the treatment and care. We aimed to explore the mediating effects of anger, anxiety, and resilience on the link between frailty and depression symptoms in patients with late-life depression. Methods: A sample of 203 older adults completed questionnaires that assessed depression, anger, resilience, and anxiety.To measure frailty, participants were evaluated using a self-rated health questionnaire, weight-adjusted waist index related to sarcopenia, and weight-adjusted handgrip strength to evaluate weakness. A mediation model was tested, hypothesizing that anger, anxiety, and resilience would partially mediate the strength of the frailty-depression link in the elderly. Results: Only self-rated health showed a significant association with depressive symptoms in late-life depression. Our study demonstrated that frailty has both direct and indirect associations with depression, mediated by anger, resilience, and anxiety. Conclusion Given that anger, resilience, and anxiety influence the link between self-rated health and depression, interventions that lead to increased resilience and decreased anger and anxiety may be promising to reduce depressive symptoms in older adults with depression.

Granular cell tumor is a rare disease, and it is even rarer in the male breast. Although it is typically a benign tumor, due to its features and image findings, it can be easily misdiagnosed and managed as a malignant tumor. Therefore, the extent of the surgery can inappropriately be expanded. To avoid misdiagnosis and overtreatment, surgeons must perform a careful evaluation. We describe a case of a granular cell tumor of the male breast treated with mastectomy.

Purpose: To evaluate the efficacy and toxicities of skin-directed radiotherapy (RT) in primary cutaneous T-cell lymphoma (CTCL). Materials and Methods: We retrospectively analyzed 57 CTCL lesions treated with skin-directed RT between January 2000 and December 2022. Lesions were categorized into three distinct groups: early-stage disease treated with local RT, advanced-stage disease treated with local RT, and advanced-stage disease treated with total skin electron beam therapy (TSEBT). Treatment outcomes, including response rates, recurrence patterns, and local progression probability, were assessed for each group. Results: Mycosis fungoides (MF) constituted 90.9% of the advanced-stage pathologies, while CD4+ primary cutaneous small/medium T-cell lymphoproliferative disorder was common in the early stage lesions (55%). Median RT doses were 30.6 Gy, 27 Gy, and 32 Gy for the local RT with early stage, the local RT with advanced stage, and TSEBT with advanced stage, respectively. The complete response rates were high across the groups: 95.5%, 70.8%, and 90.9%, respectively. Seven local recurrences (29.2%) occurred in the local RT group with advanced stage, while seven patients (63.6%) in the TSEBT group experienced local failure. All recurrences were observed in lesions and patients with MF. Acute toxicities were mainly grade 1 or 2, with no grade 3 or higher events. No significant association between RT dose and local progression rates in MF lesions was found. Conclusion Skin-directed RT in CTCL is effective for local control and well-tolerated with less toxicity.