目的探讨青少年松果体区肿瘤(pineal region tumors,PRTs)影像特点与病理类型的相关性。方法回顾性分析35例青少年PRTs的临床资料,分析影像学表现和病理类型的相关性。结果35例青少年PRTs中生殖细胞肿瘤19例,松果体实质细胞瘤6例,星形...目的探讨青少年松果体区肿瘤(pineal region tumors,PRTs)影像特点与病理类型的相关性。方法回顾性分析35例青少年PRTs的临床资料,分析影像学表现和病理类型的相关性。结果35例青少年PRTs中生殖细胞肿瘤19例,松果体实质细胞瘤6例,星形细胞瘤7例,其他类型3例。生殖细胞肿瘤MRI主要表现为等或稍短T1信号,稍长T2信号,增强扫描多均匀明显强化,可见坏死及钙化。松果体母细胞肿瘤好发于青少年,MRI多呈短T1、T2信号,显著均匀强化;坏死多见,钙化少见。星形细胞瘤体积较大,多见囊变,MRI呈均匀等T1、T2信号,实质部分不同程度强化,囊性部分多不强化,基本无坏死钙化。结论青少年最常见的PRTs主要为生殖细胞肿瘤,低级别星形细胞瘤和松果体母细胞瘤。不同病理类型的松果体区肿瘤的影像学表现具有一定的特异性,结合临床资料综合分析有助于术前定性诊断。展开更多
Clear cell hidradenocarcinoma (CCH) is an exceedingly rare and highly malignant tumor of the eccrine sweat glands. Its treatment is extremely difficult due to the characteristically aggressive clinical course includin...Clear cell hidradenocarcinoma (CCH) is an exceedingly rare and highly malignant tumor of the eccrine sweat glands. Its treatment is extremely difficult due to the characteristically aggressive clinical course including repeated local recurrence and uncontrollable distal metastasis coming along with a very poor prognosis. Most published case studies recommend a wide surgical excision followed by adjuvant conservative therapy, which is generally considered to be the standard treatment. Two cases of nodular CCH of the scalp either presenting as a singular primary lesion or at an already metastatic stage were analyzed retrospectively. Wide local excision of the tumor couldn't prevent the primary carcinoma from recurring and metastasizing. Both cases received various therapies but the results were unsatisfactory. Although most authors have recommended that early wide surgical excision of the tumor is a feasible therapeutic measurement, our results raise doubts on the efficacy of this treatment strategy. As alternative approaches (i.e. chemotherapy, radiotherapy) are similarly controversial, further studies and a wide exchange of clinical experiences are crucial.展开更多
文摘目的探讨青少年松果体区肿瘤(pineal region tumors,PRTs)影像特点与病理类型的相关性。方法回顾性分析35例青少年PRTs的临床资料,分析影像学表现和病理类型的相关性。结果35例青少年PRTs中生殖细胞肿瘤19例,松果体实质细胞瘤6例,星形细胞瘤7例,其他类型3例。生殖细胞肿瘤MRI主要表现为等或稍短T1信号,稍长T2信号,增强扫描多均匀明显强化,可见坏死及钙化。松果体母细胞肿瘤好发于青少年,MRI多呈短T1、T2信号,显著均匀强化;坏死多见,钙化少见。星形细胞瘤体积较大,多见囊变,MRI呈均匀等T1、T2信号,实质部分不同程度强化,囊性部分多不强化,基本无坏死钙化。结论青少年最常见的PRTs主要为生殖细胞肿瘤,低级别星形细胞瘤和松果体母细胞瘤。不同病理类型的松果体区肿瘤的影像学表现具有一定的特异性,结合临床资料综合分析有助于术前定性诊断。
基金supported by grants from National Natural Science Foundation of China (No.81100946)Natural Science Foundation of Hubei Province (No. 2011CDB560)+1 种基金China Postdoctoral Science Foundation (No.CPSF 20090460948)Robert-Bosch Foundation (No.32.5.8003.0079.0)
文摘Clear cell hidradenocarcinoma (CCH) is an exceedingly rare and highly malignant tumor of the eccrine sweat glands. Its treatment is extremely difficult due to the characteristically aggressive clinical course including repeated local recurrence and uncontrollable distal metastasis coming along with a very poor prognosis. Most published case studies recommend a wide surgical excision followed by adjuvant conservative therapy, which is generally considered to be the standard treatment. Two cases of nodular CCH of the scalp either presenting as a singular primary lesion or at an already metastatic stage were analyzed retrospectively. Wide local excision of the tumor couldn't prevent the primary carcinoma from recurring and metastasizing. Both cases received various therapies but the results were unsatisfactory. Although most authors have recommended that early wide surgical excision of the tumor is a feasible therapeutic measurement, our results raise doubts on the efficacy of this treatment strategy. As alternative approaches (i.e. chemotherapy, radiotherapy) are similarly controversial, further studies and a wide exchange of clinical experiences are crucial.
