Human papillomavirus (HPV) is an important causative agent of cervical carcinoma and some malignant cutaneous tumors. The integration of HPV DNA into the host genome is one of the most important risk factors for malig...Human papillomavirus (HPV) is an important causative agent of cervical carcinoma and some malignant cutaneous tumors. The integration of HPV DNA into the host genome is one of the most important risk factors for malignant transformation. Here, we report the case of a 53-year-old man with multiple, black-brown genital macules and nodules. Histological findings resembled those for Bowen’s disease, and we made a diagnosis of bowenoid papulosis. This condition is generally benign, but invasive squamous cell carcinoma (SCC) arising from bowenoid papulosis has been previously reported. Therefore, we took biopsy specimens from 10 lesions and tested them for the presence of HPV DNA. DNA sequencing identified HPV type 16 (HPV-16) DNA in all samples. Next, we excised 4 different relatively large lesions and performed an amplification of papillomavirus oncogene transcripts (APOT) assay. This assay showed that all samples had only episome-derived viral transcripts, indicating no integration of HPV DNA into the host genome. We have followed this case for 3 years, and no progression to Bowen’s disease or SCC has so far been observed. We conclude that the APOT assay is a feasible method for evaluating the malignant potential of bowenoid papulosis.展开更多
Primary cutaneous anaplastic large cell lymphoma(CALCL)is regarded as an indolent type of cutaneous T-cell lymphoma.However,a few recent publications revealed that C-ALCL patients with initial leg involvement had sign...Primary cutaneous anaplastic large cell lymphoma(CALCL)is regarded as an indolent type of cutaneous T-cell lymphoma.However,a few recent publications revealed that C-ALCL patients with initial leg involvement had significantly worse survival than those without initial leg involvement.Herein,we report a case of C-ALCL with subsequent leg involvement,which led to death after chemoradiation therapy.A 75 years old Japanese man presented with multiple erythematous nodules in his left arm and the side of his left chest.Histopathological and immunohistochemical studies led to the diagnosis of primary C-ALCL.At the initial diagnosis,no leg lesion was found.One year after the initial diagnosis,C-ALCL appeared in his right lower thigh and left hip.Radiation therapy,low-dose etoposide and CHOP therapy were performed;however,the patient died of malignant lymphoma 4 years after the initial diagnosis.We speculated that the occurrence of subsequent leg involvement may also be indicative of a worse prognosis,as in the case with initial leg involvement in C-ALCL.Therefore,we propose that C-ALCL patients with initial or subsequentleg involvement should be classified as a distinct clinicopathological variant of C-ALCL("leg-type"involvement)and that they may require intense therapy.展开更多
Background: Atopic dermatitis (AD)- specific genes have not yet been clarified. Objectives To identify gene expression specific to active atopic skin lesions. Methods: We analysed 23 000 genes in skin biopsy samples f...Background: Atopic dermatitis (AD)- specific genes have not yet been clarified. Objectives To identify gene expression specific to active atopic skin lesions. Methods: We analysed 23 000 genes in skin biopsy samples from 17 patients with AD and four normal controls using Affymetrix oligonucleotide arrays. Results Four of the 10 genes with the greatest differences in expression between patients and controls, S100A8 and S100A7 (upregulated), and loricrin and filaggrin (downregulated), were epidermal differentiation genes located on 1q21, a locus previously reported to have a genetic linkage with AD. Conclusions: Our results, showing downregulation of the cornified envelope genes and upregulation of the alternative keratinization pathway, are the first to suggest abnormal epidermal differentiation and defective defences as key abnormalities in AD.展开更多
文摘Human papillomavirus (HPV) is an important causative agent of cervical carcinoma and some malignant cutaneous tumors. The integration of HPV DNA into the host genome is one of the most important risk factors for malignant transformation. Here, we report the case of a 53-year-old man with multiple, black-brown genital macules and nodules. Histological findings resembled those for Bowen’s disease, and we made a diagnosis of bowenoid papulosis. This condition is generally benign, but invasive squamous cell carcinoma (SCC) arising from bowenoid papulosis has been previously reported. Therefore, we took biopsy specimens from 10 lesions and tested them for the presence of HPV DNA. DNA sequencing identified HPV type 16 (HPV-16) DNA in all samples. Next, we excised 4 different relatively large lesions and performed an amplification of papillomavirus oncogene transcripts (APOT) assay. This assay showed that all samples had only episome-derived viral transcripts, indicating no integration of HPV DNA into the host genome. We have followed this case for 3 years, and no progression to Bowen’s disease or SCC has so far been observed. We conclude that the APOT assay is a feasible method for evaluating the malignant potential of bowenoid papulosis.
文摘Primary cutaneous anaplastic large cell lymphoma(CALCL)is regarded as an indolent type of cutaneous T-cell lymphoma.However,a few recent publications revealed that C-ALCL patients with initial leg involvement had significantly worse survival than those without initial leg involvement.Herein,we report a case of C-ALCL with subsequent leg involvement,which led to death after chemoradiation therapy.A 75 years old Japanese man presented with multiple erythematous nodules in his left arm and the side of his left chest.Histopathological and immunohistochemical studies led to the diagnosis of primary C-ALCL.At the initial diagnosis,no leg lesion was found.One year after the initial diagnosis,C-ALCL appeared in his right lower thigh and left hip.Radiation therapy,low-dose etoposide and CHOP therapy were performed;however,the patient died of malignant lymphoma 4 years after the initial diagnosis.We speculated that the occurrence of subsequent leg involvement may also be indicative of a worse prognosis,as in the case with initial leg involvement in C-ALCL.Therefore,we propose that C-ALCL patients with initial or subsequentleg involvement should be classified as a distinct clinicopathological variant of C-ALCL("leg-type"involvement)and that they may require intense therapy.
文摘Background: Atopic dermatitis (AD)- specific genes have not yet been clarified. Objectives To identify gene expression specific to active atopic skin lesions. Methods: We analysed 23 000 genes in skin biopsy samples from 17 patients with AD and four normal controls using Affymetrix oligonucleotide arrays. Results Four of the 10 genes with the greatest differences in expression between patients and controls, S100A8 and S100A7 (upregulated), and loricrin and filaggrin (downregulated), were epidermal differentiation genes located on 1q21, a locus previously reported to have a genetic linkage with AD. Conclusions: Our results, showing downregulation of the cornified envelope genes and upregulation of the alternative keratinization pathway, are the first to suggest abnormal epidermal differentiation and defective defences as key abnormalities in AD.
