Evaluation of the LC-1000 Flow Cytometry Screening System for Cervical Cancer Screening in Routine Health Checkups.

OBJECTIVE: This study evaluated the performance of a flow cytometry system (LC-1000) in screening cervical precancerous lesions at routine health checkups. STUDY DESIGN: In total, 928 health examinees were enrolled at 16 health promotion centers in 13 Korean cities between 2016 and 2017. All participants underwent liquid-based cervical cytology and flow cytometry testing to determine the cell proliferation index (CPIx). RESULTS: The positivity rate of the LC-1000 system increased with the severity of the cervical cytology findings (p for trend < 0.001). When low-grade squamous intraepithelial lesion (LSIL) or higher (including LSIL, high-grade squamous intraepithelial lesion [HSIL], and atypical squamous cells without excluding HSIL [ASC-H]) was defined as gold-standard positivity, the sensitivity, specificity, PPV, and NPV of LC-1000 were 75.3% (95% confidence interval [CI], 66.8-83.7), 58.5% (95% CI, 55.2-61.9), 18.1% (95% CI, 14.5-21.8), and 95.1% [95% CI, 93.2-97.0], respectively. The median CPIx increased significantly from normal cytology to HSIL (p < 0.001). The median CPIx was higher in high-risk human papillomavirus (HR-HPV)-positive cases than in HR-HPV-negative cases (0.23 vs. 0.17, p < 0.001), while it did not differ between HR-HPV-positive and HR-HPV-negative cases with normal cytology findings (0.16 vs. 0.16, p = 0.700). CONCLUSION: The LC-1000 system is potentially useful for screening cervical precancer and cancer, especially when excluding normal or ASC of undetermined significance cases in routinely screened populations.

No effect of tumor-infiltrating lymphocytes (TILs) on prognosis in patients with early triple-negative breast cancer: Validation of recommendations by the International TILs Working Group 2014.

PURPOSE: The aim of this study was to examine the International TILs Working Group 2014 (IWG) recommendations for evaluating the clinical utility of tumor-infiltrating lymphocytes (TILs) in patients with early triple-negative breast cancer (TNBC). METHODS: Records for 133 patients with early TNBC who underwent surgery between 2008 and 2010 were reviewed. A total of 121 of 133 formalin-fixed, paraffin-embedded tumor samples were available and reviewed following IWG recommendations. RESULTS: Most of the patients had node-negative T1-2 tumors and received adjuvant chemotherapy; T1-2 tumors accounted for 117 of 121 cases. Sixty-two percent (75/121) of all patients had >10% stromal TILs. Intratumoral TILs and lymphocyte-predominant breast cancer (LPBC) were observed in 72% and 19% of the patients, respectively. However, there were no significant differences according to the presence of stromal TILs, intratumoral TILs, TILs at the invasive edge, or LPBC in terms of recurrence-free and overall survival (all P > 0.05). A multivariate analysis adjusted for T and N stage, grade, and adjuvant chemotherapy revealed that no TILs parameters were associated with survival outcomes. CONCLUSIONS: TILs evaluations following the IWG recommendations may not be useful for predicting survival outcomes in patients with early TNBC. J. Surg. Oncol. 2016;114:17-21. © 2016 Wiley Periodicals, Inc.

Sox10 expression in ovarian epithelial tumors is associated with poor overall survival.

Sox10 is a transcription factor regulating the development of several cell lineages and is involved in tumor development. However, the clinicopathological relevance of Sox10 expression in ovarian cancer has not been examined. We assessed expression of Sox10 in ovarian epithelial tumors by immunohistochemistry and assessed its prognostic value by analyzing the correlation between its expression and clinicopathological factors. We used tissue microarrays including 244 ovarian epithelial tumors. Sox10 staining was found in the cytoplasm or nucleus of tumor cells. Malignant serous, mucinous, and endometrioid tumors were significantly more likely to express Sox10 than benign and borderline tumors. Expression patterns in adenocarcinomas were different for histologic subtypes: nuclear Sox10 staining was common in clear-cell adenocarcinomas and serous adenocarcinomas, whereas all cases of mucinous and endometrioid tumors were negative for nuclear staining. Nuclear Sox10 staining was also associated with chemoresistance and shorter overall survival in ovarian adenocarcinomas, notably in high-grade serous adenocarcinoma. Sox10 is expressed in many ovarian carcinomas, suggesting that it might be involved in oncogenesis of ovarian carcinoma. Expression pattern of Sox10 differs between histological subtypes. Nuclear Sox10 expression is an independent indicator of poor prognosis in ovarian adenocarcinomas, notably in high-grade serous adenocarcinomas.

Fine needle aspiration cytology of parathyroid lesions.

BACKGROUND: There has been an increase in the use of fine needle aspiration cytology (FNAC) for the diagnosis of parathyroid lesions (PLs). Differentiation between a thyroid lesion and a PL is not easy because of their similar features. We reviewed parathyroid aspirates in our institution and aimed to uncover trends in diagnostic criteria. METHODS: We selected 25 parathyroid aspirates (from 6 men and 19 women) confirmed surgically or immunohistochemically from 2006 to 2011. RESULTS: Major architectural findings of PLs include scattered naked nuclei, loose clusters, a papillary pattern with a fibrovascular core, tight clusters, and a follicular pattern. These architectures were commonly admixed with one another. Cytological features included anisokaryosis, stippled chromatin, a well-defined cell border, and oxyphilic cytoplasm. Eighteen of the 25 patients were diagnosed with PL using FNAC. Seven patients had been misdiagnosed with atypical cells (n=2), benign follicular cells (n=2), adenomatous goiter (n=2) and metastatic carcinoma (n=1) in FNAC. Using clinicoradiologic data, the sensitivity of the cytological diagnosis was 86.7%. The cytological sensitivity decreased to 50% without this information. CONCLUSIONS: FNAC of PL is easily confused with thyroid lesions. A combination of cytological parameters and clinical data will be required to improve the diagnostic sensitivity of PLs.

Primary Monophasic Synovial Sarcoma Arising in the Mesentery: Case Report of an Extremely Rare Mesenteric Sarcoma Confirmed by Molecular Detection of a SYT-SSX2 Fusion Transcript.

Synovial sarcoma arises in the para-articular tissues, and it can also occur in various unexpected sites. We report a rare case of primary monophasic synovial sarcoma (MSS) arising in the mesentery. A 59-year-old man presented with a palpable abdominal mass. On microscopic examination, the entire tumor comprised a dense proliferation of the spindle cells without epithelial components. The tumor cells were positive for transducin-like enhancer of split 1, bcl-2, epithelial membrane antigen and CD99 but negative for CD34, CD117, alpha-smooth muscle actin, cytokeratin, and calretinin on immunohistochemistry. The reverse transcriptase-polymerase chain reaction revealed a single 151-bp fragment representing the SYT-SSX2 fusion transcript. Because mesenteric MSS is extremely rare and many cases display histologic findings that overlap with those of more frequently involved tumors such as hemangiopericytoma and gastrointestinal stromal tumor, there is a chance of making an incorrect diagnosis that can result in an inappropriate treatment.