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Liu C.-H.,National Defense Medical Center | Wang H.-H.,National Defense Medical Center | Perng C.-L.,Tri Service General Hospital | Perng C.-L.,Graduate Institute of Pathology | And 3 more authors.
Thoracic Cancer

Primary extranodal natural killer/T- cell lymphoma, nasal type (NK/TCL) in the lung is extremely rare and associated with Epstein-Barr virus (EBV) infection. An 80-year-old male presented with hemoptysis, which had lasted three days. Physical examination revealed inspiratory crackles at the left lung base and massive splenomegaly. Chest radiograph shows a mass-like lesion in the left lower lung but no active lesion six months earlier. Computed tomography demonstrated a soft tissue mass (size: 6.6 × 5.1cm) with increased ground-glass opacities in the left lower lobe, several pulmonary nodules, and mediastinal lymphadenopathy. Transthoracic needle biopsy of the left-lower-lobe lung mass was performed. The pathology revealed atypical lymphoid cell infiltration, which is immunoreactive for cytoplasmic CD3, CD30 and CD56, but not reactive for CK and CD20. EBV-encoded RNA (EBER) was also detected in these atypical lymphoid cells. The serum EBV DNA level was 7.03 × 106copies/mL and subtype 1 EBV was identified. No evidence of lymphoma involvement was found in the extrathoracic site. Primary pulmonary lymphoma showing nasal-type NK/T-cell subtype was diagnosed. Chemotherapy with cyclophosphamide and prednisolone was initiated immediately but the patient deteriorated and died three weeks later. In conclusion, patients presenting with rapidly growing lung mass and massive splenomegaly raise the possibility of aggressive pulmonary lymphoma. Extranodal NK/T-cell lymphoma with high baseline plasma EBV DNA levels signifies poor prognosis. Identifying young high-risk patients may have benefits for early aggressive and successful treatment.© 2012 Tianjin Lung Cancer Institute and Wiley Publishing Asia Pty Ltd. Source

Tsai J.-H.,National Taiwan University Hospital | Huang W.-C.,Far Eastern Memorial Hospital | Kuo K.-T.,National Taiwan University Hospital | Chen Y.-L.,National Taiwan University Hospital | And 2 more authors.

Aims: S100P is a calcium-binding protein that is frequently expressed in pancreatic adenocarcinoma and perihilar cholangiocarcinoma. The aim of this study was to investigate the pathological significance of the expression of S100P in peripheral intrahepatic cholangiocarcinoma (ICC). Methods and results: Immunohistochemical staining was used to investigate S100P expression in 112 cases of peripheral ICC. The results were compared with those for perihilar and extrahepatic cholangiocarcinomas. Patients with S100P-positive peripheral ICC were more likely to have elevated serum levels of carcinoembryonic antigen (CEA) and CA19-9 than those with S100P-negative peripheral ICCs. All cases of peripheral ICC associated with intrahepatic lithiasis and all cases with intraductal/periductal growth patterns were positive for S100P. S100P-positive peripheral ICCs were highly associated with 'bile duct' morphology rather than cholangiolar differentiation. Nearly all cases of perihilar and extrahepatic cholangiocarcinoma were positive for S100P. Similarly to perihilar and extrahepatic cholangiocarcinomas, S100P-positive peripheral ICCs showed more frequent expression of CEA and MUC2, and were more likely to be N-cadherin-negative, than S100P-negative cases. Notably, K-RAS mutations were only detected in S100P-positive peripheral ICCs, with a frequency similar to that in perihilar and extrahepatic cholangiocarcinomas. Patients with S100P-positive peripheral ICC were more likely to have poor prognoses than those with S100P-negative tumours. Conclusions: S100P immunostaining identifies a subset of peripheral ICC that probably originates from larger bile ducts. This subset of peripheral ICCs shares common morphological and molecular features with perihilar and extrahepatic cholangiocarcinomas. © 2012 Blackwell Publishing Limited. Source

Lin Y.-C.,National Defense Medical Center and Tri Service General Hospital | Perng C.-L.,Tri Service General Hospital | Perng C.-L.,Graduate Institute of Pathology | Chang Y.-M.,National Defense Medical Center and Tri Service General Hospital | And 4 more authors.
Taiwanese Journal of Obstetrics and Gynecology

Objective: Adenoid basal carcinoma (ABC) is an uncommon neoplasm of the uterine cervix. ABC can be accompanied by carcinoma in situ or invasive carcinoma. Most cases are discovered accidentally during radical hysterectomy. ABC is associated with a high risk of human papillomavirus infection (HPV), most often HPV 16 infection. Case report: We present a rare case of an 86-year-old Taiwanese married woman who suffered from bloody vaginal discharge and occasional lower abdominal pain and received cervical biopsy. The pathological report revealed squamous cell carcinoma (SCC) of the uterine cervix. After radical hysterectomy, bilateral salpingo-oophorectomy, and bilateral pelvic and para-aortic lymph node dissection, the final pathological report revealed SCC coexisting with ABC, and both of the components were infected by HPV 31. After receiving radiotherapy, she maintained outpatient department follow-up. Conclusion: A literature review revealed that this was a rare case of combined ABC-SCC associated with HPV 31 infection. In this case, the ABC component did not affect the tumor stage because it was confined to the cervix. However, we must avoid overestimating the clinical stage because the ABC component is thought to be a benign lesion. © 2013 . Source

Chang Y.-C.,Graduate Institute of Life science | Chen S.-F.,China Medical University at Heping | Jao S.-W.,Graduate Institute of Dental Science | Lin Y.-L.,Graduate Institute of Pathology | Fu E.,Graduate Institute of Dental Science

Aims: To test the validity of an invasive pattern grading score (IPGS) developed for oral squamous cell carcinoma (OSCC) as a prognostic indicator and to elucidate the relationship between the IPGS and clinical parameters. Methods and results: The IPGS was applied to a total of 153 cases of OSCC. There were significant correlations between IPGS and distant metastasis (P = 0.01) or recurrence (P = 0.001). However, there were no significant correlations between IPGS and gender, age, size or extent, location, status of lymph node metastasis, clinical staging, or histological grading. Cases of OSCC with higher IPGS were associated with poor patient survival (P < 0.001) and higher probability of tumour recurrence (P = 0.001). Intraobserver ( = 0.74) and interobserver agreement ( = 0.67) were very satisfactory. Conclusions: Our study confirms the validity of the IPGS, an indicator that is simple and easy to use. IPGS not only provides histological assessment of biological behaviour, but also offers an independent prognostic factor that may influence the treatment of OSCC. © 2010 Blackwell Publishing Limited. Source

Perng C.-L.,Tri Service General Hospital and National Defense Medical Center | Perng C.-L.,Graduate Institute of Pathology | Chen H.-Y.,Taipei City Hospital Renai Branch | Chiueh T.-S.,Tri Service General Hospital and National Defense Medical Center | And 5 more authors.
Journal of Medical Microbiology

Non-tuberculous mycobacteria (NTM) are increasingly important opportunistic pathogens responsible for a variety of clinical diseases. The aim of this study was to evaluate a novel technique, real-time PCR coupled with high-resolution melting analysis (real-time PCR-HRMA), for NTM identification. Two pairs of unique primers targeted to the 16S rRNA gene and the 16S- 23S internal transcribed spacer region were selected for further evaluation. A total of 149 mycobacterial clinical isolates were subjected to analysis using the real-time PCR-HRMA system. Overall, 134 NTM identified by the 16S rRNA full-gene sequencing method were categorized into four major groups: Mycobacterium avium complex, Mycobacterium chelonae group, Mycobacterium gordonae and Mycobacterium fortuitum group. Of the 134 prevalent mycobacterial isolates, 101 mycobacteria (75.4%) could be identified correctly by the real-time PCR-HRMA system. The individual sensitivities for the M. avium complex, M. chelonae group, M. gordonae and M. fortuitum groups were 90.9, 89.1, 100 and 36.8%, respectively. The specificity of identifying these groups varied from 96.4 to 100%. When identification failed, mostly it was attributable to various species in the M. fortuitum group. The real-time PCR-HRMA system is therefore a rapid and sensitive method for identifying prevalent NTM in a clinical laboratory. © 2012 SGM. Source

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