Plasmablastic lymphoma(PBL) is a rare aggressive B-cell lymphoproliferative disorder,which has been characterized by the World Health Organization as a new entity.Although PBL is most commonly seen in the oral cavity ...Plasmablastic lymphoma(PBL) is a rare aggressive B-cell lymphoproliferative disorder,which has been characterized by the World Health Organization as a new entity.Although PBL is most commonly seen in the oral cavity of human immunodeficiency virus(HIV)-positive patients,it can also be seen in extraoral sites in immunocompromised patients who are HIV-negative.Here we present a rare case of PBL of the small intestine in a 55-year-old HIV-negative male.Histopathological examination of the excisional lesion showed a large cell lymphoma with plasmacytic differentiation diffusely infiltrating the small intestine and involving the surrounding organs.The neoplastic cells were diffusely positive for CD79a,CD138 and CD10 and partly positive for CD38 and epithelial membrane antigen.Approximately 80% of the tumor cells were positive for Ki-67.A monoclonal rearrangement of the kappa light chain gene was demonstrated.The patient died approximately 1.5 mo after diagnosis in spite of receiving two courses of the CHOP chemotherapy regimen.In a review of the literature,this is the first case report of PBL with initial presentation in the small intestine without HIV and Epstein-Barr virus infection,and a history of hepatitis B virus infection and radiotherapy probably led to the iatrogenic immunocompromised state.展开更多
Primary breast lymphomas are rare. They are defined by the involvement of one or both breasts. This is the first site affected or mainly affected with the exception of ipsilateral axillary involvement. Due to the abse...Primary breast lymphomas are rare. They are defined by the involvement of one or both breasts. This is the first site affected or mainly affected with the exception of ipsilateral axillary involvement. Due to the absence of specific clinical and radiological signs, the diagnosis is confirmed by histology. The most frequent entity remains diffuse large B-cell lymphomas. The place of surgery remains exclusive in establishing the initial diagnosis. Anthracycline-based chemotherapy with or without Rituximab remains the gold standard in the therapeutic arsenal. We present the case of a 42-year-old woman with no surgical history;nulliparous;followed in nephrology for chronic renal failure, received as an outpatient for a nodule in the left breast in a context of dyspnea. This is a nodule discovered incidentally during a routine examination. Clinical examination of the left breast found nipple retraction without ulceration;a mass 7 cm in diameter located in the left upper outer quadrant. Breast ultrasound and mammography suggest a suspected lesion of malignancy. After a percutaneous micro biopsy;the histological study confirms the diagnosis of a large B-cell lymphoma of the left breast. A TAP CT scan is performed as part of the extension assessment. Chemotherapy based on R-CHOP with local radiotherapy is decided in CPR.展开更多
目的探讨原发性中枢神经系统淋巴瘤(primary central nervous system lymphoma,PCNSL)的影像学诊断、治疗及预后,提高临床对PCNSL的认识。方法回顾性分析经术后病理证实的30例免疫正常的原发性中枢神经系统淋巴瘤患者的临床资料。单纯手...目的探讨原发性中枢神经系统淋巴瘤(primary central nervous system lymphoma,PCNSL)的影像学诊断、治疗及预后,提高临床对PCNSL的认识。方法回顾性分析经术后病理证实的30例免疫正常的原发性中枢神经系统淋巴瘤患者的临床资料。单纯手术8例,手术+化疗14例,手术+化疗+放疗8例。Kaplan-Meier法分析患者生存期。结果PCNSL临床表现主要为颅内压增高和神经功能缺损为主,误诊率高达93.3%。24例PCNSL(占80.0%)MRI明显均匀强化,表现为团块状及结节状强化,或出现具有特异性的"缺口征"、"尖角征"。病理检查均为B细胞淋巴瘤,以弥漫性大B淋巴瘤最多见。Kaplan-Meier分析全组中位生存期32.0个月,2年生存率46.7%。手术+化疗(中位生存期29个月)及手术+化疗+放疗组(34个月)的生存期高于单纯手术组(3个月)。手术+化疗组(64.3%)及手术+化疗+放疗组(62.5%)的2年生存率均高于单纯手术组(0)。放化疗患者肿瘤全切组与次全切组的生存率未见明显的统计学差异(P>0.05)。结论原发性中枢神经系统淋巴瘤影像学缺乏特异性,易误诊;单纯手术治疗不是首选,应尽早采取以放、化疗为主的全身综合治疗。展开更多
文摘Plasmablastic lymphoma(PBL) is a rare aggressive B-cell lymphoproliferative disorder,which has been characterized by the World Health Organization as a new entity.Although PBL is most commonly seen in the oral cavity of human immunodeficiency virus(HIV)-positive patients,it can also be seen in extraoral sites in immunocompromised patients who are HIV-negative.Here we present a rare case of PBL of the small intestine in a 55-year-old HIV-negative male.Histopathological examination of the excisional lesion showed a large cell lymphoma with plasmacytic differentiation diffusely infiltrating the small intestine and involving the surrounding organs.The neoplastic cells were diffusely positive for CD79a,CD138 and CD10 and partly positive for CD38 and epithelial membrane antigen.Approximately 80% of the tumor cells were positive for Ki-67.A monoclonal rearrangement of the kappa light chain gene was demonstrated.The patient died approximately 1.5 mo after diagnosis in spite of receiving two courses of the CHOP chemotherapy regimen.In a review of the literature,this is the first case report of PBL with initial presentation in the small intestine without HIV and Epstein-Barr virus infection,and a history of hepatitis B virus infection and radiotherapy probably led to the iatrogenic immunocompromised state.
文摘Primary breast lymphomas are rare. They are defined by the involvement of one or both breasts. This is the first site affected or mainly affected with the exception of ipsilateral axillary involvement. Due to the absence of specific clinical and radiological signs, the diagnosis is confirmed by histology. The most frequent entity remains diffuse large B-cell lymphomas. The place of surgery remains exclusive in establishing the initial diagnosis. Anthracycline-based chemotherapy with or without Rituximab remains the gold standard in the therapeutic arsenal. We present the case of a 42-year-old woman with no surgical history;nulliparous;followed in nephrology for chronic renal failure, received as an outpatient for a nodule in the left breast in a context of dyspnea. This is a nodule discovered incidentally during a routine examination. Clinical examination of the left breast found nipple retraction without ulceration;a mass 7 cm in diameter located in the left upper outer quadrant. Breast ultrasound and mammography suggest a suspected lesion of malignancy. After a percutaneous micro biopsy;the histological study confirms the diagnosis of a large B-cell lymphoma of the left breast. A TAP CT scan is performed as part of the extension assessment. Chemotherapy based on R-CHOP with local radiotherapy is decided in CPR.
文摘目的探讨原发性中枢神经系统淋巴瘤(primary central nervous system lymphoma,PCNSL)的影像学诊断、治疗及预后,提高临床对PCNSL的认识。方法回顾性分析经术后病理证实的30例免疫正常的原发性中枢神经系统淋巴瘤患者的临床资料。单纯手术8例,手术+化疗14例,手术+化疗+放疗8例。Kaplan-Meier法分析患者生存期。结果PCNSL临床表现主要为颅内压增高和神经功能缺损为主,误诊率高达93.3%。24例PCNSL(占80.0%)MRI明显均匀强化,表现为团块状及结节状强化,或出现具有特异性的"缺口征"、"尖角征"。病理检查均为B细胞淋巴瘤,以弥漫性大B淋巴瘤最多见。Kaplan-Meier分析全组中位生存期32.0个月,2年生存率46.7%。手术+化疗(中位生存期29个月)及手术+化疗+放疗组(34个月)的生存期高于单纯手术组(3个月)。手术+化疗组(64.3%)及手术+化疗+放疗组(62.5%)的2年生存率均高于单纯手术组(0)。放化疗患者肿瘤全切组与次全切组的生存率未见明显的统计学差异(P>0.05)。结论原发性中枢神经系统淋巴瘤影像学缺乏特异性,易误诊;单纯手术治疗不是首选,应尽早采取以放、化疗为主的全身综合治疗。
