CYTOLOGICAL AND IMMUNOCYTOCHEMICAL DIAGNOSIS OF TUMOR PLEURITIS

2017 ◽  
Vol 63 (6) ◽  
pp. 894-899
Author(s):  
Viktor Novik ◽  
A. Nefedova ◽  
Ye. Yakubo ◽  
O. Ivanov ◽  
Yekaterina Shalina ◽  
...  
Keyword(s):  
Tumor Cells ◽  
Malignant Tumor ◽  
Cytological Study ◽  
False Negative ◽  
Unknown Primary ◽  
Cytological Examination ◽  
Immunocytochemical Studies ◽  
Negative Conclusion ◽  
Primary Localization

Cytological examination of smears from the sediment after centrifugation of pleural fluids was performed in 479 patients who underwent examination and treatment at our institution in 2014-2016. In 249 (52%) patients tumor cells were not detected in smears, in 230 (48%) observations a suspicion (28 observations) or a confident conclusion (202 observations) on the presence of malignant tumor cells in the exudates was cytologically expressed. In 38 cases immunocytochemical studies was additionally performed. In two observations a false-negative conclusion about the absence of tumor cells in smears was expressed. The sensitivity of the cytological study in the diagnosis of malignant pleuritis was 99.0%. Affirmative cytological conclusions on the presence of malignant pleuritis were given in 87.0% of observations, suspicious cytological responses - in 12.0% of cases. Immunocytochemical studies significantly expanded the possibilities of cytological research and were of great importance in the diagnosis of metastases of tumors of unknown primary localization.

High-throughput concentration of rare malignant tumor cells from large-volume effusions by multistage inertial microfluidics

Lab on a Chip ◽  
2022 ◽  
Author(s):  
Nan Xiang ◽  
Zhonghua Ni
Keyword(s):  
Tumor Cells ◽  
High Throughput ◽  
Malignant Tumor ◽  
Large Volume ◽  
Concentration Factor ◽  
Pleural Effusions ◽  
Inertial Microfluidics ◽  
Low Concentration ◽  
Malignant Pleural Effusions ◽  
On Chip

On-chip concentration of rare malignant tumor cells (MTCs) in malignant pleural effusions (MPEs) with a large volume is challenging. Previous microfluidic concentrators suffer from a low concentration factor (CF) and...

scholarly journals Circulating tumor cell characterization of lung cancer brain metastasis in the cerebrospinal fluid through single-cell transcriptome analysis

2020 ◽  
Author(s):  
Haoyu Ruan ◽  
Yihang Zhou ◽  
Jie Shen ◽  
Yue Zhai ◽  
Ying Xu ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Cerebrospinal Fluid ◽  
Single Cell ◽  
Tumor Cells ◽  
Expression Profiles ◽  
Gene Expression Profiles ◽  
Unknown Primary ◽  
Great Promise ◽  
Cell Cycle Gene

AbstractMetastatic lung cancer accounts for about half of the brain metastases (BM). Development of leptomeningeal metastases (LM) are becoming increasingly common, and its prognosis is still poor despite the advances in systemic and local approaches. Cytology analysis in the cerebrospinal fluid (CSF) remains the diagnostic gold standard. Although several previous studies performed in CSF have offered great promise for the diagnostics and therapeutics of LM, a comprehensive characterization of circulating tumor cells (CTCs) in CSF is still lacking. To fill this critical gap of lung adenocarcinoma LM (LUAD-LM), we analyzed the transcriptomes of 1,375 cells from 5 LUAD-LM patient and 3 control samples using single-cell RNA sequencing technology. We defined CSF-CTCs based on abundant expression of epithelial markers and genes with lung origin, as well as the enrichment of metabolic pathway and cell adhesion molecules, which are crucial for the survival and metastases of tumor cells. Elevated expression of CEACAM6 and SCGB3A2 was discovered in CSF-CTCs, which could serve as candidate biomarkers of LUAD-LM. We identified substantial heterogeneity in CSF-CTCs among LUAD-LM patients and within patient among individual cells. Cell-cycle gene expression profiles and the proportion of CTCs displaying mesenchymal and cancer stem cell properties also vary among patients. In addition, CSF-CTC transcriptome profiling identified one LM case as cancer of unknown primary site (CUP). Our results will shed light on the mechanism of LUAD-LM and provide a new direction of diagnostic test of LUAD-LM and CUP cases from CSF samples.

scholarly journals VE-PTP participates in vasculogenic mimicry by preventing autophagic degradation of VE-cadherin

2019 ◽  
Author(s):  
Daniel Delgado-Bellido ◽  
Concepción Bueno-Galera ◽  
Angel Garcia-Diaz ◽  
F. Javier Oliver
Keyword(s):  
Endothelial Cells ◽  
Malignant Melanoma ◽  
Tumor Cells ◽  
Malignant Tumor ◽  
Vasculogenic Mimicry ◽  
P120 Catenin ◽  
Human Malignant Melanoma ◽  
Aberrant Phenotype ◽  
Autophagic Degradation ◽  
Vascular Expression

AbstractAberrant extra-vascular expression of VE-cadherin has been observed in metastasis associated with Vasculogenic Mimicry (VM); we have recently shown that in VM prone (VM+) tumor cells VE-cadherin is mainly in the form of pVE-cadherin in Y658 allowing an increased plasticity that potentiates VM development. As excessive VE-cadherin phosphorylation is regulated by the phosphatase VEPTP in endothelial cells in the current study we analysed its role in this aberrant phenotype in malignant tumor cells. We show that human malignant melanoma cells VM+, also express VE-PTP although at lower levels than endothelial cells. The complex VE-PTP/VE-Cadherin/p120-catenin act as a safeguard to prevent VE-cadherin degradation by autophagy. Indeed, silencing of VE-PTP results in complete degradation of VE-cadherin with the features of autophagy and increases the global p120 tyrosine phosphorylation status. In summary, we show that VE-PTP is involved in VM formation and disruption of VE-PTP/VE-Cadherin/p120 complex results in enhanced autophagy in aggressive VM+ cells.

scholarly journals Extraneural metastases in medulloblastoma

2011 ◽  
Vol 69 (2b) ◽  
pp. 328-331 ◽  
Author(s):  
V M F Muoio ◽  
S O Shinjo ◽  
H Matushita ◽  
S Rosemberg ◽  
M J Teixeira ◽  
...  
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Tumor Cells ◽  
Malignant Tumor ◽  
Ventriculoperitoneal Shunt ◽  
Clinical Profile ◽  
Invasive Growth ◽  
Extraneural Metastases

Medulloblastoma is the most common childhood malignant tumor of central nervous system, but it may also occur in adults. It presents high invasive growth with spreading of tumor cells into the leptomeningeal space along the neuroaxis early in the course of the disease. Extraneural metastases are rare but frequently lethal, occurring only in 1 to 5% of patients, and are related, in the most of cases, to the presence of ventriculoperitoneal shunt. Here we characterize the clinical profile of five cases of medulloblastoma with systemic spreading of tumor cells, also comparing them to cases already described in the literature.

scholarly journals EVALUATING THE ROLE OF FDG PET-CT SCAN AS A SOLE IMAGING MODALITY IN THE MANAGEMENT OF MUO NECK

2020 ◽  
pp. 39-41
Author(s):  
Krishnappa Krishnappa ◽  
Krishna Prasad ◽  
Shruti Satish ◽  
Murali R Nadig
Keyword(s):  
Ct Scan ◽  
Predictive Value ◽  
Fdg Pet ◽  
Imaging Modality ◽  
False Negative ◽  
Unknown Primary ◽  
Pet Ct ◽  
Fdg Pet Ct ◽  
Pet Ct Scan

Aim:to study the role of PET- CT SCAN as a single imaging modality in the diagnosis of MUO neck. methodology: retrospective study analysis of 51 cases of clinical unknown primary with cervical metastasis . RESULTS: FDG PET CT tracer uptake was detected in 24/51. true positive in 18 cases out of 24,false positive in 6 cases, false negative in 2 cases with sensitivity of 90%, specificity of 82%,positive predictive value of 75%,negative predictive value of 93% and accuracy of 84.91%. conclusion: FDG PET CT can be used as a sole imaging modality in the diagnosis of MUO neck.it is complimentary to endoscopy.

A study of the localization of transferrin receptor in malignant tumor cells

1995 ◽  
Vol 28 (3-4) ◽  
pp. 172-180 ◽  
Author(s):  
Yutaka Kimijima ◽  
Nobuyuki Tanaka ◽  
Yoshinobu Eishi ◽  
Takao Miyamoto ◽  
Kenichi Shionoya ◽  
...  
Keyword(s):  
Tumor Cells ◽  
Malignant Tumor ◽  
Transferrin Receptor

Non-apoptotic cell death in malignant tumor cells and natural compounds

2018 ◽  
Vol 420 ◽  
pp. 210-227 ◽  
Author(s):  
Jing Ye ◽  
Ruonan Zhang ◽  
Fan Wu ◽  
Lijuan Zhai ◽  
Kaifeng Wang ◽  
...  
Keyword(s):  
Cell Death ◽  
Tumor Cells ◽  
Malignant Tumor ◽  
Apoptotic Cell ◽  
Natural Compounds ◽  
Apoptotic Cell Death

Investigation of Transmissible Venereal Tumor in Male Dogs by Cytological Examination

2020 ◽  
Author(s):  
C. Cagri Cingi ◽  
Deniz Yeni ◽  
Ebubekir Yazici ◽  
Tugba Akbas Cine ◽  
Mehmet Ucar
Keyword(s):  
Tumor Cells ◽  
Staining Method ◽  
Early Time ◽  
Clinical Findings ◽  
Giemsa Staining ◽  
Caudal Part ◽  
Cytological Examination ◽  
Tumor Mass ◽  
Intermediate Density

Transmissible Venereal Tumor (TVT) is one of the most uncontrolled spreading tumor via mating between dogs observed in both sexes. The clinical findings are less remarkable and are usually located in the caudal part of the penis and may include preputial discharge, licking of the region, dysuria, phimosis or paraphimosis (occasionally). In this study, the incidence of TVT and the relations of tumor with some factors were investigated in 145 male dogs, in Eskiºehir, Turkey. TVT’s diagnosis was based on location of the tumor mass and mainly exfoliative cytological findings. Smears of caudal part of the penis were painted with Giemsa staining method. The cells in the smears were identified as typical transmissible venereal tumor cells, polymorphnuclear leukocytes (PMN), erythrocyte, parabasal, intermediate, nucleated and anuclear superficial cells. In exfoliative cytological examinations, TVT cells were observed in the smears of 17 dogs (11,72 %), but only four of them (2,76 %) had TVT lesions clinically. Thirteen (8,97 %) of dogs had TVT cells but not having TVT lesions . It was found that the ages, weights and breeds of dogs had no effect on the TVT lesions and TVT cells. TVT positive animals were determined to have more erythrocyte and intermediate density than negatives and no association with other cells were found. PMNs were significantly different and high in the TVT cell positive cases compared to the negatives. In dogs with negative TVT cells, parabasal, intermediate, nuclear/anuclear superficial cells were more than those positives. As a result, the male dogs having no lesions could be infected with TVT. Dogs should be examined not only clinically, but also cytologically, to determine whether TVT cells are present. This method can be an easy way to find and treat TVT lesion-free but infected dogs at an early time.

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