BACKGROUND Blastic plasmacytoid dendritic cell tumor(BPDCN)is a rare and highly invasive lymphohematopoietic tumor that originates from plasmacytoid dendritic cells.BPDCN has an extremely poor prognosis.Skin lesions a...BACKGROUND Blastic plasmacytoid dendritic cell tumor(BPDCN)is a rare and highly invasive lymphohematopoietic tumor that originates from plasmacytoid dendritic cells.BPDCN has an extremely poor prognosis.Skin lesions are usually the first manifestation of BPDCN,although the tumor may also invade the bone marrow,lymph nodes,peripheral blood,and other parts of the body,leading to several other manifestations,requiring further differentiation through skin biopsy and immunohistochemistry.CASE SUMMARY In the present paper,the cases of 2 patients diagnosed with BPDCN are discussed.The immunohistochemistry analysis of these 2 patients revealed positivity for CD4,CD56,and CD123.Currently,no standard chemotherapy regimen is available for BPDCN.Therefore,intensive therapy for acute lymphoblastic leukemia was applied as the treatment method for these 2 cases.CONCLUSION Although allogeneic bone marrow transplantation could be further effective in prolonging the median survival the ultimate prognosis was unfavorable.Future treatment modalities tailored for elderly patients will help prolong survival.展开更多
BACKGROUND Blastic plasmacytoid dendritic cell neoplasm(BPDCN)is a rare,highly invasive malignant neoplasm.There is no universally accepted standard of care because of its rarity and the dearth of prospective research...BACKGROUND Blastic plasmacytoid dendritic cell neoplasm(BPDCN)is a rare,highly invasive malignant neoplasm.There is no universally accepted standard of care because of its rarity and the dearth of prospective research.It is still challenging for some patients to achieve persistent clinical remission or cure,despite the success of allogeneic hematopoietic stem cell transplantation(allo-HSCT),indicating that there is still a significant recurrence rate.We report a case of prevention of BPDCN allograft recurrence by azacitidine maintenance therapy and review the relevant literature.CASE SUMMARY We report a 41-year-old man with BPDCN who was admitted to hospital due to skin sclerosis for>5 mo’duration.BPDCN was diagnosed by combined clinical assessment and laboratory examinations.Following diagnosis,the patients underwent induction consolidation chemotherapy to achieve the first complete remission,followed by bridging allo-HSCT.Post-transplantation,azacitidine(75 mg/m2 for 7 d)was administered as maintenance therapy,with repeat administration every 4–6 wk and appropriate extension of the chemotherapy cycle.After 10 cycles,the patient has been disease free for 26 mo after transplantation.Regular assessments of bone marrow morphology,minimal residual disease,full donor chimerism,Epstein–Barr virus,and cytomegalovirus all yielded normal results with no abnormalities detected.CONCLUSION Azacitidine may be a safe and effective maintenance treatment for BPDCN following transplantation because there were no overt adverse events during the course of treatment.展开更多
BACKGROUND Blastic plasmacytoid dendritic cell neoplasm(BPDCN)is a rare and clinically aggressive hematologic malignancy originating from the precursors of plasmacytoid dendritic cells.BPDCN often involves the skin,ly...BACKGROUND Blastic plasmacytoid dendritic cell neoplasm(BPDCN)is a rare and clinically aggressive hematologic malignancy originating from the precursors of plasmacytoid dendritic cells.BPDCN often involves the skin,lymph nodes,and bone marrow,with rapid clinical progression and a poor prognosis.The BPDCN diagnosis is mainly based on the immunophenotype.CASE SUMMARY In this paper,we retrospectively analyzed 2 cases of BPDCN.Both patients were elderly males.The lesions manifested as skin masses.Morphological manifestations included diffuse and dense tumor cell infiltration of the dermis and subcutaneous tissues.Immunohistochemistry staining showed that cluster of differentiation CD4,CD56,CD43,and CD123 were positive.CONCLUSION In this paper,we retrospectively analyzed 2 cases of BPDCN.Both patients were elderly males.The lesions manifested as skin masses.Morphological manifestations included diffuse and dense tumor cell infiltration of the dermis and subcutaneous tissues.Immunohistochemistry staining showed that cluster of differentiation CD4,CD56,CD43,and CD123 were positive.展开更多
We specifically discuss the mechanisms of the pathogenesis,diagnosis,and management of blastic plasmacytoid dendritic cell neoplasm(BPDCN),a rare but aggressive haematologic malignancy characterized by frequent skin m...We specifically discuss the mechanisms of the pathogenesis,diagnosis,and management of blastic plasmacytoid dendritic cell neoplasm(BPDCN),a rare but aggressive haematologic malignancy characterized by frequent skin manifestations and systemic dissemination.The article enriches our understanding of BPDCN through detailed case reports showing the clinical,immunophenotypic,and histopathological features that are critical for diagnosing this disease.These cases highlight the essential role of pathologists in employing advanced immunophenotyping techniques to accurately identify the disease early in its course and guide treatment decisions.Furthermore,we explore the implications of these findings for management strategies,emphasizing the use of targeted therapies such as tagraxofusp and the potential of allogeneic haematopoietic stem cell transplantation in achieving remission.The editorial underscores the importance of interdisciplinary approaches in managing BPDCN,pointing towards a future where precision medicine could significantly improve patient outcomes.展开更多
Blastic plasmacytoid dendritic cell neoplasm(BPDCN)is a rare hematological malignancy characterized by recurrent skin nodules,an aggressive clinical course with rapid involvement of hematological organs,and a poor pro...Blastic plasmacytoid dendritic cell neoplasm(BPDCN)is a rare hematological malignancy characterized by recurrent skin nodules,an aggressive clinical course with rapid involvement of hematological organs,and a poor prognosis with poor overall survival.BPDCN is derived from plasmacytoid dendritic cells(pDCs)and its pathogenesis is unclear.The tumor cells show aberrant expression of CD4,CD56,interleukin-3 receptor alpha chain(CD 123),blood dendritic cell antigen 2(BDCA 2/CD303),blood dendritic cell antigen 4(BDCA4)and transcription factor(E protein)E2-2(TCF4).The best treatment drugs are based on experience by adopting those used for either leukemia or lymphoma.Relapse with drug resistance generally occurs quickly.Stem cell transplantation after the first complete remission is recommended and tagraxofusp is the first targeted therapy.In this review,we summarize the differentiation of BPDCN from its cell origin,its connection with normal pDCs,clinical characteristics,genetic mutations and advances in treatment of BPDCN.This review provides insights into the mechanisms of and new therapeutic approaches for BPDCN.展开更多
BACKGROUND Blastic plasmacytoid dendritic cell neoplasm(BPDCN)is a rare and highly aggressive hematopoietic malignancy.BPDCN is difficult to diagnose because of the overlap in morphologic and immunophenotypic features...BACKGROUND Blastic plasmacytoid dendritic cell neoplasm(BPDCN)is a rare and highly aggressive hematopoietic malignancy.BPDCN is difficult to diagnose because of the overlap in morphologic and immunophenotypic features with various cutaneous lymphatic hematopoietic tumors.CASE SUMMARY We report on three BPDCN cases,all characterized by skin nodules and examined by histology,immunohistochemical detection,in situ hybridization for Epstein-Barr virus,and follow-up.We also review the relevant literature.All patients were positive for CD56 and negative for Epstein-Barr encoded small RNA.Two patients had bone marrow involvement.Chemotherapy is the main treatment for BPDCN,but case 1 showed bone marrow suppression and case 2 developed recurrence after chemotherapy.Case 1 survived for 7 mo,case 2 for 17 mo,and case 3 for 9 mo.CONCLUSION An accurate pathological diagnosis is a precondition for treatment,and the diagnosis of BPDCN should be based on a combination of clinical symptoms,pathological characteristics,immunophenotype,and other auxiliary examinations.It is necessary to clarify the clinicopathological features and biological behavior of BPDCN to improve its understanding by both clinicians and pathologists.Case 2 survived significantly longer than the other two cases,suggesting that the treatment received by case 2 was more effective.展开更多
基金Supported by The National Key Research and Development Programs of China,No.2022YFC2603801Maternal and Child Health Project of Jiangsu Province,No.F201717+1 种基金Doctor Project of Affiliated Hospital of Jiangsu University,No.jdfyrc2019003Clinical and Virology Study of 2019-ncov Infection in Patients with Moderate to Severe Psoriasis,No.Jdfyxgzx005.
文摘BACKGROUND Blastic plasmacytoid dendritic cell tumor(BPDCN)is a rare and highly invasive lymphohematopoietic tumor that originates from plasmacytoid dendritic cells.BPDCN has an extremely poor prognosis.Skin lesions are usually the first manifestation of BPDCN,although the tumor may also invade the bone marrow,lymph nodes,peripheral blood,and other parts of the body,leading to several other manifestations,requiring further differentiation through skin biopsy and immunohistochemistry.CASE SUMMARY In the present paper,the cases of 2 patients diagnosed with BPDCN are discussed.The immunohistochemistry analysis of these 2 patients revealed positivity for CD4,CD56,and CD123.Currently,no standard chemotherapy regimen is available for BPDCN.Therefore,intensive therapy for acute lymphoblastic leukemia was applied as the treatment method for these 2 cases.CONCLUSION Although allogeneic bone marrow transplantation could be further effective in prolonging the median survival the ultimate prognosis was unfavorable.Future treatment modalities tailored for elderly patients will help prolong survival.
文摘BACKGROUND Blastic plasmacytoid dendritic cell neoplasm(BPDCN)is a rare,highly invasive malignant neoplasm.There is no universally accepted standard of care because of its rarity and the dearth of prospective research.It is still challenging for some patients to achieve persistent clinical remission or cure,despite the success of allogeneic hematopoietic stem cell transplantation(allo-HSCT),indicating that there is still a significant recurrence rate.We report a case of prevention of BPDCN allograft recurrence by azacitidine maintenance therapy and review the relevant literature.CASE SUMMARY We report a 41-year-old man with BPDCN who was admitted to hospital due to skin sclerosis for>5 mo’duration.BPDCN was diagnosed by combined clinical assessment and laboratory examinations.Following diagnosis,the patients underwent induction consolidation chemotherapy to achieve the first complete remission,followed by bridging allo-HSCT.Post-transplantation,azacitidine(75 mg/m2 for 7 d)was administered as maintenance therapy,with repeat administration every 4–6 wk and appropriate extension of the chemotherapy cycle.After 10 cycles,the patient has been disease free for 26 mo after transplantation.Regular assessments of bone marrow morphology,minimal residual disease,full donor chimerism,Epstein–Barr virus,and cytomegalovirus all yielded normal results with no abnormalities detected.CONCLUSION Azacitidine may be a safe and effective maintenance treatment for BPDCN following transplantation because there were no overt adverse events during the course of treatment.
文摘BACKGROUND Blastic plasmacytoid dendritic cell neoplasm(BPDCN)is a rare and clinically aggressive hematologic malignancy originating from the precursors of plasmacytoid dendritic cells.BPDCN often involves the skin,lymph nodes,and bone marrow,with rapid clinical progression and a poor prognosis.The BPDCN diagnosis is mainly based on the immunophenotype.CASE SUMMARY In this paper,we retrospectively analyzed 2 cases of BPDCN.Both patients were elderly males.The lesions manifested as skin masses.Morphological manifestations included diffuse and dense tumor cell infiltration of the dermis and subcutaneous tissues.Immunohistochemistry staining showed that cluster of differentiation CD4,CD56,CD43,and CD123 were positive.CONCLUSION In this paper,we retrospectively analyzed 2 cases of BPDCN.Both patients were elderly males.The lesions manifested as skin masses.Morphological manifestations included diffuse and dense tumor cell infiltration of the dermis and subcutaneous tissues.Immunohistochemistry staining showed that cluster of differentiation CD4,CD56,CD43,and CD123 were positive.
基金Supported by The Chongqing Health Commission and Science and Technology Bureau,No.2023MSXM060.
文摘We specifically discuss the mechanisms of the pathogenesis,diagnosis,and management of blastic plasmacytoid dendritic cell neoplasm(BPDCN),a rare but aggressive haematologic malignancy characterized by frequent skin manifestations and systemic dissemination.The article enriches our understanding of BPDCN through detailed case reports showing the clinical,immunophenotypic,and histopathological features that are critical for diagnosing this disease.These cases highlight the essential role of pathologists in employing advanced immunophenotyping techniques to accurately identify the disease early in its course and guide treatment decisions.Furthermore,we explore the implications of these findings for management strategies,emphasizing the use of targeted therapies such as tagraxofusp and the potential of allogeneic haematopoietic stem cell transplantation in achieving remission.The editorial underscores the importance of interdisciplinary approaches in managing BPDCN,pointing towards a future where precision medicine could significantly improve patient outcomes.
基金the National NaOiral Science Foundation of China(No.81460030,81770221).
文摘Blastic plasmacytoid dendritic cell neoplasm(BPDCN)is a rare hematological malignancy characterized by recurrent skin nodules,an aggressive clinical course with rapid involvement of hematological organs,and a poor prognosis with poor overall survival.BPDCN is derived from plasmacytoid dendritic cells(pDCs)and its pathogenesis is unclear.The tumor cells show aberrant expression of CD4,CD56,interleukin-3 receptor alpha chain(CD 123),blood dendritic cell antigen 2(BDCA 2/CD303),blood dendritic cell antigen 4(BDCA4)and transcription factor(E protein)E2-2(TCF4).The best treatment drugs are based on experience by adopting those used for either leukemia or lymphoma.Relapse with drug resistance generally occurs quickly.Stem cell transplantation after the first complete remission is recommended and tagraxofusp is the first targeted therapy.In this review,we summarize the differentiation of BPDCN from its cell origin,its connection with normal pDCs,clinical characteristics,genetic mutations and advances in treatment of BPDCN.This review provides insights into the mechanisms of and new therapeutic approaches for BPDCN.
文摘BACKGROUND Blastic plasmacytoid dendritic cell neoplasm(BPDCN)is a rare and highly aggressive hematopoietic malignancy.BPDCN is difficult to diagnose because of the overlap in morphologic and immunophenotypic features with various cutaneous lymphatic hematopoietic tumors.CASE SUMMARY We report on three BPDCN cases,all characterized by skin nodules and examined by histology,immunohistochemical detection,in situ hybridization for Epstein-Barr virus,and follow-up.We also review the relevant literature.All patients were positive for CD56 and negative for Epstein-Barr encoded small RNA.Two patients had bone marrow involvement.Chemotherapy is the main treatment for BPDCN,but case 1 showed bone marrow suppression and case 2 developed recurrence after chemotherapy.Case 1 survived for 7 mo,case 2 for 17 mo,and case 3 for 9 mo.CONCLUSION An accurate pathological diagnosis is a precondition for treatment,and the diagnosis of BPDCN should be based on a combination of clinical symptoms,pathological characteristics,immunophenotype,and other auxiliary examinations.It is necessary to clarify the clinicopathological features and biological behavior of BPDCN to improve its understanding by both clinicians and pathologists.Case 2 survived significantly longer than the other two cases,suggesting that the treatment received by case 2 was more effective.