Melanoma ResearchPub Date : 2025-08-01Epub Date: 2025-05-27DOI: 10.1097/CMR.0000000000001043
Michele Kreuz, Pedro Henrique de Souza Wagner, Larissa E Tanimoto, Vitor A da Rosa, Barbara Antonia D Talah, Francisco Cezar A de Moraes
{"title":"Melanoma and pregnant women: a systematic review and meta-analysis.","authors":"Michele Kreuz, Pedro Henrique de Souza Wagner, Larissa E Tanimoto, Vitor A da Rosa, Barbara Antonia D Talah, Francisco Cezar A de Moraes","doi":"10.1097/CMR.0000000000001043","DOIUrl":"10.1097/CMR.0000000000001043","url":null,"abstract":"<p><p>Pregnancy-associated melanoma is melanoma that can develop up to 1 year postpregnancy. There is no solid evidence on how pregnancy can affect melanoma survival, recurrence, or mortality. This systematic review and meta-analysis aims to analyze the overall survival (OS), recurrence, and mortality rate in pregnant women diagnosed with melanoma. A comprehensive search was performed on Medline, Embase, and Web of Science to identify studies comparing melanoma in pregnant versus nonpregnant women. Hazard ratios (HRs) and risk ratios (RRs) with 95% confidence intervals (CIs) were estimated using a random-effects model. Heterogeneity was evaluated using the I2 statistic, and significance was defined as P values less than 0.05. Statistical analyses were conducted using RStudio 4.4.1. Our meta-analysis included 15 studies, consisting of 29 095 patients; 2917 (10%) were pregnant women. In the OS outcome, statistically significant differences were observed, favoring pregnant women in comparison to nonpregnant women; both groups were diagnosed with melanoma (HR: 0.81, 95% CI: 0.69-0.95, P = 0.012, I2 = 85.4%). The OS at 5 years did not show statistically significant differences (OR: 1.08, 95% CI: 0.50-2.35, P = 0.83, I2 = 57.9%). Similarly, the outcomes of melanoma recurrence (RR: 1.19, 95% CI: 0.95-1.48, P = 0.12, I2 = 0%) and mortality (RR: 1.60, 95% CI: 0.82-3.13, P = 0.16, I2 = 73.5%) also showed no statistically significant differences between groups. According to this systematic review and meta-analysis, pregnant women diagnosed with melanoma have a higher OS rate than nonpregnant women.</p>","PeriodicalId":18550,"journal":{"name":"Melanoma Research","volume":" ","pages":"217-226"},"PeriodicalIF":1.5,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144216324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Melanoma ResearchPub Date : 2025-07-22DOI: 10.1097/CMR.0000000000001057
Hee-Yun Kim, Yu-Jin Choi, Kyung-Min Jeong, Hyun-Ja Jeong
{"title":"Compound 48/80 suppresses melanoma growth by inducing apoptosis and enhancing immune response.","authors":"Hee-Yun Kim, Yu-Jin Choi, Kyung-Min Jeong, Hyun-Ja Jeong","doi":"10.1097/CMR.0000000000001057","DOIUrl":"https://doi.org/10.1097/CMR.0000000000001057","url":null,"abstract":"<p><p>Compound 48/80 (Com 48/80), a mast cell degranulator, triggers allergic reactions and has been linked to a reduced risk of skin cancer. This study investigated the potential anticancer effects of Com 48/80 using in vitro and in vivo melanoma models. In vitro, Com 48/80 significantly induced apoptosis in melanocytes through caspase activation. In the melanoma animal model experiment, Com 48/80 enhanced survival, reduced tumor volume, and downregulated melanoma-specific genes (Dct2 and Gp100), while increasing the activities of caspase-3, -8, and -9. Additionally, Com 48/80 elevated allergy-related and immune-enhancing mediators, including immunoglobulin E, histamine, interleukin (IL)-2, IL-4, IL-5, IL-6, IL-12, IL-13, IL-33, tumor necrosis factor-α, thymic stromal lymphopoietin, and interferon-γ. In the immunodeficient mice, Com 48/80 improved survival, suppressed melanoma growth, reduced immobility time, and enhanced the expression of immune mediators. Moreover, Com 48/80 significantly lowered tissue damage indicators compared to tumor control mice. These results suggest that Com 48/80 inhibits melanoma progression by inducing apoptosis and enhancing immune responses, highlighting the potential of Com 48/80 as a novel therapeutic strategy for melanoma treatment and prevention.</p>","PeriodicalId":18550,"journal":{"name":"Melanoma Research","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144708127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Melanoma ResearchPub Date : 2025-07-03DOI: 10.1097/CMR.0000000000001054
Laura Cristina Gironi, Francesca Zottarelli, Elia Esposto, Edoardo Cammarata, Giulia Giorgione, Simona Mellone, Chiara Airoldi, Denise Vurchio, Giulia Borgonovi, Alice Spano, Mara Giordano, Paola Savoia
{"title":"Dermatologic surveillance in healthy carriers of CDKN2A and p.E318K MITF germline variants from melanoma-prone families: a 14 years hospital-based experience.","authors":"Laura Cristina Gironi, Francesca Zottarelli, Elia Esposto, Edoardo Cammarata, Giulia Giorgione, Simona Mellone, Chiara Airoldi, Denise Vurchio, Giulia Borgonovi, Alice Spano, Mara Giordano, Paola Savoia","doi":"10.1097/CMR.0000000000001054","DOIUrl":"https://doi.org/10.1097/CMR.0000000000001054","url":null,"abstract":"<p><p>Pathogenic variants in the CDKN2A gene are the most common genetic cause of hereditary melanoma, significantly increasing the risk of multiple melanomas at an early age and the incidence of noncutaneous tumors, particularly pancreatic cancer. Similarly, the MITF p.E318K variant is associated with an elevated risk of cutaneous melanoma, renal cell carcinoma, and pancreatic cancer. This study investigates the incidence of cutaneous and noncutaneous cancers among first- and second-degree relatives of patients with cutaneous melanoma who carry the same CDKN2A or MITF p.E318K germline variants as their corresponding index case. Among 62 relatives of patients with cutaneous melanoma, 48 (77.4%) carried CDKN2A variants, while 14 (22.6%) carried the MITF p.E318K variant. Of the 39 CDKN2A carriers with follow-up data (mean duration: 60.87 months), 31 were cancer-free at the time of genetic diagnosis, while eight had a prior cancer history, including seven with cutaneous melanoma. During follow-up, five carriers developed a new cancer. In CDKN2A families, additional cutaneous melanoma and pancreatic cancer cases were observed in 43.75 and 21.87% families, respectively. In the MITF cohort, none of the 12 cancer-free carriers developed cutaneous melanoma during a mean follow-up of 24.64 months, although two developed basal cell carcinoma. Among the three index cases, two had invasive cutaneous melanoma, and all three families had pancreatic cancer cases. This study highlights the heightened elevated cancer risk for CDKN2A and MITF p.E318K variant emphasizing the need for ongoing surveillance.</p>","PeriodicalId":18550,"journal":{"name":"Melanoma Research","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144584327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Melanoma ResearchPub Date : 2025-06-01Epub Date: 2025-04-29DOI: 10.1097/CMR.0000000000001019
Ariel Beitner, Adam Abu-Abeid, Danit Dayan, Andrea Gat, Mor Miodovnik, Carmit Levy, Eran Nizri
{"title":"Patterns of expression and prognostic implication of glycoprotein nonmetastatic protein B (GPNMB) expression in sentinel lymph nodes of melanoma patients.","authors":"Ariel Beitner, Adam Abu-Abeid, Danit Dayan, Andrea Gat, Mor Miodovnik, Carmit Levy, Eran Nizri","doi":"10.1097/CMR.0000000000001019","DOIUrl":"10.1097/CMR.0000000000001019","url":null,"abstract":"<p><p>Sentinel lymph node biopsy (SLNB) is a critical procedure in the management of melanoma, offering prognostic information and guiding adjuvant therapy. Glycoprotein nonmetastatic melanoma protein B (GPNMB), a melanogenesis marker, has been implicated in melanoma progression. This study investigates the expression patterns of GPNMB in SLN metastases and their association with oncological outcomes. We conducted a retrospective analysis of 27 melanoma patients with positive SLNB at Tel Aviv Sourasky Medical Center between 2010 and 2020. Immunohistochemistry was used to assess GPNMB expression in SLN metastases, categorizing patients into two groups based on GPNMB expression patterns: homogeneous (GPNMBho) and margin high (GPNMBmh). Peri-tumoral CD8+ T cell infiltration was also evaluated. Clinical outcomes, including melanoma-specific survival (MSS) and disease-free survival (DFS), were analyzed. GPNMB expression in SLN metastases displayed two distinct patterns: uniform (GPNMBho) and high at the tumor margins (GPNMBmh). Patients in the GPNMBmh group had significantly more peri-tumoral CD8+ T cells and exhibited improved MSS (127.6, 95% CI: 111.7-143.5 vs 79.5, 95% CI: 48.2-110.9 months, P = 0.018) and DFS (107.5, 95% CI: 79-135.8 vs 38, 95% CI: 15.2-60.8 months, P = 0.04) compared to the GPNMBho group. Multivariate analysis confirmed that GPNMB expression pattern and lymph node metastasis size were independent predictors of both MSS and DFS. GPNMB expression patterns in SLN metastases are strongly associated with long-term oncological outcomes in melanoma patients. The GPNMBmh pattern, characterized by higher margin expression and increased CD8+ infiltration, may serve as a prognostic biomarker for recurrence if validated in larger cohorts.</p>","PeriodicalId":18550,"journal":{"name":"Melanoma Research","volume":" ","pages":"155-161"},"PeriodicalIF":1.5,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143414598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Melanoma ResearchPub Date : 2025-06-01Epub Date: 2025-02-07DOI: 10.1097/CMR.0000000000001020
Inés González-Barrallo, Victoria Eugenia Castellón Rubio, Javier Medina, Sofia España Fernández, Karmele Mujika, Margarita Majem, Carlos Aguado, Miguel Ángel Cabrera Suárez, Isabel Palacio, Lisa Osterloh, Alejandro Martínez-Fernández, Almudena García-Castaño
{"title":"Relation between dabrafenib plus trametinib-induced pyrexia and age in BRAF V600-mutated metastatic melanoma patients: A post hoc analysis of the real-world ELDERLYMEL study.","authors":"Inés González-Barrallo, Victoria Eugenia Castellón Rubio, Javier Medina, Sofia España Fernández, Karmele Mujika, Margarita Majem, Carlos Aguado, Miguel Ángel Cabrera Suárez, Isabel Palacio, Lisa Osterloh, Alejandro Martínez-Fernández, Almudena García-Castaño","doi":"10.1097/CMR.0000000000001020","DOIUrl":"10.1097/CMR.0000000000001020","url":null,"abstract":"<p><p>Pyrexia is the most common adverse event in patients treated with dabrafenib plus trametinib. However, the pathogenesis of pyrexia and factors to identify patients at higher risk of developing pyrexia remain unknown. The ELDERLYMEL study was a multicenter, noninterventional, retrospective, real-world study comparing the effectiveness and safety of dabrafenib plus trametinib between elderly (≥75 years, n = 29) and younger (<75 years, n = 130) advanced melanoma BRAF V600-mutated patients in Spain. Surprisingly, pyrexia was significantly less frequent in elderly patients (13.8%) than in younger (42.3%). The post hoc analysis presented here aimed to investigate the relationship between age and pyrexia, applying logistic regression models. Patients <75 years had 4.59 more possibilities to develop pyrexia than elderly patients. The possibility of developing pyrexia increased by 1.03 as age decreased by 1 year. Receiver operating characteristics curves identified 61.5 years as the optimal cutoff value to predict the onset of pyrexia. The age-adjusted regression model revealed that patients <61.5 years had 2.53 more possibilities to develop pyrexia than those ≥61.5. This study demonstrates, for the first time, that age significantly influences the development of pyrexia in patients with BRAF V600-mutated advanced melanoma receiving dabrafenib plus trametinib. Age should be considered in the management and follow-up of these patients but should not limit treatment decisions. These findings provide important insights for clinical practice and contribute to a better understanding of pyrexia in elderly patients. The constructed nomogram based on age could serve as a useful tool for estimating the risk of pyrexia in patients receiving this treatment.</p>","PeriodicalId":18550,"journal":{"name":"Melanoma Research","volume":" ","pages":"170-175"},"PeriodicalIF":1.5,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12043263/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143365246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Melanoma ResearchPub Date : 2025-06-01Epub Date: 2025-04-29DOI: 10.1097/CMR.0000000000001027
Marie Chaveron, Elise Toulemonde, Eve Desmedt, Marie Boileau, Laurent Mortier
{"title":"Resolution of diffuse cuticular melanosis under immunotherapy in a patient with metastatic melanoma.","authors":"Marie Chaveron, Elise Toulemonde, Eve Desmedt, Marie Boileau, Laurent Mortier","doi":"10.1097/CMR.0000000000001027","DOIUrl":"https://doi.org/10.1097/CMR.0000000000001027","url":null,"abstract":"","PeriodicalId":18550,"journal":{"name":"Melanoma Research","volume":"35 3","pages":"213-215"},"PeriodicalIF":1.5,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144007801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Melanoma ResearchPub Date : 2025-06-01Epub Date: 2025-02-06DOI: 10.1097/CMR.0000000000001024
Thamila Kerkour, Ruud W J Meijers, Loes M Hollestein, Anne M L Jansen, Ayla Haanappel, Peggy Atmodimedjo, Willeke A M Blokx, Bas van Brakel, Tamar E C Nijsten, Antien L Mooyaart
{"title":"Genetic concordance in melanoma: insights from primary tumors and their matched distant metastases.","authors":"Thamila Kerkour, Ruud W J Meijers, Loes M Hollestein, Anne M L Jansen, Ayla Haanappel, Peggy Atmodimedjo, Willeke A M Blokx, Bas van Brakel, Tamar E C Nijsten, Antien L Mooyaart","doi":"10.1097/CMR.0000000000001024","DOIUrl":"10.1097/CMR.0000000000001024","url":null,"abstract":"<p><p>Melanoma metastasis poses a significant challenge due to its aggressive nature and increasing incidence. Confirming the clonal relationship between the primary melanoma and its metastasis is essential to developing reliable prediction models. Here, we compared the genetic profile of primary melanoma and matched metastasis to assess their genetic clonal relationship. Using a targeted sequencing panel encompassing 330 amplicons, we targeted hotspot regions in 41 cancer genes and 154 single nucleotide polymorphisms. The clonal relation between primary and matched metastasis tumors was evaluated by comparing the mutational status and the copy number variations profile in 15 patients with primarily thin melanomas and distant metastases, or with a long latency between the primary melanoma and distant metastasis. Our findings revealed that only about 50% of the analyzed matched primaries and metastases were clonally or likely clonally related, while the remaining sets were either not clonally related or difficult to determine with certainty the clonal relatedness. The findings of our study illustrate the intricate clonal relationships between primary melanoma and metastasis and raise doubts if the metastatic potential is overestimated in the primary tumors. Further investigation with larger cohorts is needed to better understand this complexity of melanoma metastasis and clonality phenomenon, which should be carefully considered when using primary tumor molecular profiles for prognostic model building or therapeutic guidance in metastatic cases.</p>","PeriodicalId":18550,"journal":{"name":"Melanoma Research","volume":" ","pages":"162-169"},"PeriodicalIF":1.5,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12043267/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143256227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Melanoma ResearchPub Date : 2025-06-01Epub Date: 2025-02-04DOI: 10.1097/CMR.0000000000001026
Faruk Tas, Kayhan Erturk
{"title":"Brain metastases during follow-up of patients with resected cutaneous melanoma.","authors":"Faruk Tas, Kayhan Erturk","doi":"10.1097/CMR.0000000000001026","DOIUrl":"10.1097/CMR.0000000000001026","url":null,"abstract":"<p><p>Melanoma is among the most common tumors that disseminate to the brain. We analyzed patients with resected early-stage cutaneous melanoma who developed sole brain metastases and brain metastases accompanying other organ spreads and interpreted the clinical characteristics of these patients in this study. A total of 457 patients who developed any organ metastases during or after adjuvant therapy or in follow-up were included in the analysis. A total of 55 (12%) patients had brain metastases (M1d), and 402 patients had other (M1a,b,c) metastases. The majority of brain metastases ( n = 36, 65.4%) were accompanied by other organ metastases, only 19 patients had sole brain metastases. Brain metastases were mostly in men (76.4 vs. 61.9%, P = 0.03), and extracerebral dissemination was more commonly associated with acral lentiginous melanoma histopathology (16.7 vs. 4.7%, P = 0.04). Brain metastasis was found to be associated with shorter survival (median survivals were 6.0 vs. 12.45 months, respectively, P = 0.0001). However, there was no difference in survival between patients with isolated brain involvements and patients with brain metastases accompanied by spread to other organs (median survivals were 6.0 vs. 5.85 months, respectively, P = 0.1). In conclusion, brain metastases are a very small portion of relapsed melanoma patients, and the numbers of isolated brain metastases are even smaller, thus the significance of routine brain scans for early detection of brain involvement in the follow-up of patients might be questionable and unnecessary.</p>","PeriodicalId":18550,"journal":{"name":"Melanoma Research","volume":" ","pages":"187-191"},"PeriodicalIF":1.5,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143189837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Melanoma ResearchPub Date : 2025-06-01Epub Date: 2025-03-25DOI: 10.1097/CMR.0000000000001035
Chris Hinnen, Frederiek Tijssens, Emma von Haeseler, Sjoerd van de Berg, Ellen Kapiteijn
{"title":"Do cortisol and psychological distress levels impact the effectiveness of immunotherapy in patients with metastasized melanoma? A pilot study.","authors":"Chris Hinnen, Frederiek Tijssens, Emma von Haeseler, Sjoerd van de Berg, Ellen Kapiteijn","doi":"10.1097/CMR.0000000000001035","DOIUrl":"10.1097/CMR.0000000000001035","url":null,"abstract":"<p><p>This pilot study investigates the relationship between endogenous cortisol and subjective distress and immunotherapy response in patients with advanced melanoma. Patients were asked to donate hair and complete questionnaires. This data was related to immunotherapy response, 3 and 6 months after start. Results from 21 patients were analyzed and showed that there was a significant relationship between depressive symptoms before start of immunotherapy and response 3 and 6 months after start of immunotherapy. Also, a higher baseline level of glucocorticoids was found to be significantly associated with a higher response rate 6 months after start of immunotherapy. The present pilot study warrants further investigation into the relationship between stress and the effectiveness of immunotherapy in patients with advanced melanoma.</p>","PeriodicalId":18550,"journal":{"name":"Melanoma Research","volume":" ","pages":"204-207"},"PeriodicalIF":1.5,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12043256/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143710756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Melanoma ResearchPub Date : 2025-06-01Epub Date: 2025-02-27DOI: 10.1097/CMR.0000000000001028
Sarah Janßen, Andrew Moufarrej, Robin Springer, Lena Häberle, Paul Jäger, Christina Antke, Bernhard Homey, Harm-Henning Lindhof
{"title":"Diffuse large B-cell lymphoma mimicking metastatic melanoma: the importance of biopsies in the era of immune checkpoint inhibitors.","authors":"Sarah Janßen, Andrew Moufarrej, Robin Springer, Lena Häberle, Paul Jäger, Christina Antke, Bernhard Homey, Harm-Henning Lindhof","doi":"10.1097/CMR.0000000000001028","DOIUrl":"10.1097/CMR.0000000000001028","url":null,"abstract":"<p><p>Positron emission tomography (PET)/computed tomography (CT) imaging is an established tool in diagnosing and staging for various malignancies, however, during immune checkpoint inhibitor (ICI) therapy not only inflammatory changes may mimic disease progression, but also secondary malignancies should be considered in the setting of unusual clinical and radiographic findings. Here, we present the case of a 64-year-old man with a lymphogenic metastatic malignant melanoma treated with ipilimumab/nivolumab, in whom PET/CT indicated tumor progression of an intra-abdominal mass. Biopsy revealed an unusual reactive T-cell expansion without clonal expansion, pathologically consistent with ICI-induced immune response. As the patient's general condition worsened, we switched to targeted therapy, which had to be discontinued due to increasing fatigue. Follow-up PET/CT at 6 months showed further intra-abdominal progression. Subsequent histopathology of the extirpated mesenteric lymph node conglomerate now revealed diffuse large B-cell lymphoma. Our case highlights the importance of repeated histologic examinations of radiologic pathologies to distinguish secondary malignancies from ICI-induced inflammatory reactions or progressive disease.</p>","PeriodicalId":18550,"journal":{"name":"Melanoma Research","volume":" ","pages":"197-200"},"PeriodicalIF":1.5,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143516084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}