scholarly journals Ultra-small superparamagnetic iron oxides for metastatic lymph node detection: back on the block

2017 ◽  
Vol 10 (1) ◽  
pp. e1471 ◽  
Author(s):  
Ansje S. Fortuin ◽  
Roger Brüggemann ◽  
Janine van der Linden ◽  
Ilia Panfilov ◽  
Bas Israël ◽  
...  
Keyword(s):  
Lymph Node ◽  
Iron Oxides ◽  
Metastatic Lymph Node ◽  
Superparamagnetic Iron Oxides ◽  
Metastatic Lymph

236 Evaluation of PD-L1 expression in primary lung tumor and metastatic lymph nodes in the presence of immune cells

2020 ◽  
Vol 8 (Suppl 3) ◽  
pp. A253-A253
Author(s):  
Chris Hansis ◽  
Xiaomei Wang ◽  
Tao Wang ◽  
Gerald Feldman
Keyword(s):  
Lung Cancer ◽  
Squamous Cell Carcinoma ◽  
Lymph Node ◽  
Tumor Cells ◽  
Squamous Cell ◽  
Immune Cells ◽  
Lymph Node Metastases ◽  
Metastatic Lymph Node ◽  
Metastatic Lymph ◽  
Node Metastases

BackgroundImmunotherapies against programmed death ligand-1 (PD-L1) have been established as an effective treatment for a subset of lung cancer patients. Even though it is critical for a successful therapy to know prevalent PD-L1 expression patterns in all affected tissues, information on matching lymph node metastases and immune cells is particularly limited. The purpose of this study was thus to evaluate comparative PD-L1 expression profiles in those tissues.MethodsFDA-approved IHC assays for PD-L1 (Dako 22C3) were performed on a lung tissue array (LC814A, US Biomax) according to manufacturer’s instructions. Histopathological analysis by H-scoring was performed to determine the rate and intensity of positive tumor and immune cell staining for each of the 80 cores. The H score was calculated as follows: A total of up to 300 cells were assessed, per specimen, at 40x high-power magnification (typically over 7–10 fields). A staining level of 0–3 was then assigned to each cell, to designate the intensity of specific positive membranous-to-cytoplasmic staining. The H score was subsequently calculated as% cells staining at level 1 (x1) +% cells staining at level 2 (x2) +% cells staining at level 3 (x3) = total H score per sample. This resulted in a maximum possible H score of 300.ResultsOf the 16 adenocarcinoma tumor samples with a valid staining, 7 (44%) showed positive PD-L1 staining for tumor cells and 10 (63%) for primary immune cells. Importantly, 9 matching metastatic lymph node samples out of the 16 samples (56%) showed an increased PD-L1 H score compared to primary tumors for both tumor cells and immune cells (figure 1). Of the 15 squamous cell carcinoma samples with a valid staining, 11 (73%) showed detectable PD-L1 expression levels in the primary tumor and 12 (80%) in the primary immune cells, while 7 (47%) and 9 (60%) showed lower scores in matching metastatic lymph node tumor cells and their immune cells, respectively (figure 2). Very low or no expression of PD-L1 was detected in small cell lung cancer, as to be expected from previous studies.Abstract 236 Figure 1PD-L1 Staining in adenocarcinomaAbstract 236 Figure 2PD-L1 Staining in squamous cell carcinomaConclusionsSquamous cell carcinomas and adenocarcinomas display significant heterogeneity with regard to PD-L1 expression in associated lymph node metastases. While the reasons for this frequent discordant PD-L1 expression pattern involving both tumor and immune cells need to be investigated further, our findings may help guide the proper interpretation of PD-L1 companion diagnostic test results and subsequent therapeutic decisions.AcknowledgementsThe views in this Abstract have not been formally disseminated by the U.S. Food and Drug Administration and should not be construed to represent any agency determination or policy.

Automatic FDG-PET-based tumor and metastatic lymph node segmentation in cervical cancer

2014 ◽  
Author(s):  
Dídac R. Arbonès ◽  
Henrik G. Jensen ◽  
Annika Loft ◽  
Per Munck af Rosenschöld ◽  
Anders Elias Hansen ◽  
...  
Keyword(s):  
Cervical Cancer ◽  
Lymph Node ◽  
Fdg Pet ◽  
Metastatic Lymph Node ◽  
Metastatic Lymph

Prognostic Significance of the Metastatic Lymph Node Ratio in Gastric Cancer Patients

2009 ◽  
Vol 33 (11) ◽  
pp. 2378-2382 ◽  
Author(s):  
Naoto Fukuda ◽  
Yasuyuki Sugiyama ◽  
Akira Midorikawa ◽  
Hiroyuki Mushiake
Keyword(s):  
Gastric Cancer ◽  
Lymph Node ◽  
Cancer Patients ◽  
Lymph Node Ratio ◽  
Metastatic Lymph Node ◽  
Prognostic Significance ◽  
Metastatic Lymph ◽  
Node Ratio ◽  
Gastric Cancer Patients

The Technique of Laparoscopic Pelvic Ultrasonography for Metastatic Lymph Node

2011 ◽  
Vol 21 (1) ◽  
pp. 61-65 ◽  
Author(s):  
Tak-Hong Cheung ◽  
Keith Wing-Kit Lo ◽  
So-Fan Yim ◽  
Stella Ho ◽  
May Mei-Yung Yu ◽  
...  
Keyword(s):  
Lymph Node ◽  
Metastatic Lymph Node ◽  
Metastatic Lymph ◽  
Pelvic Ultrasonography

scholarly journals Nanoparticles can improve the positive rate of metastatic lymph node in thyroid cancer surgery

2020 ◽  
Author(s):  
Xindi Su ◽  
Fang Chai ◽  
Benrui Lin ◽  
Lu Qu ◽  
Keyi Liu ◽  
...  
Keyword(s):  
Thyroid Cancer ◽  
Lymph Node ◽  
Lymph Nodes ◽  
Metastatic Lymph Node ◽  
Cancer Surgery ◽  
Control Group ◽  
Blood Calcium ◽  
Metastatic Lymph ◽  
Positive Rate ◽  
Experimental Group

Abstract Objective. To investigate the application of carbon nanoparticles in lymph node dissection and parathyroid gland protection during thyroid cancer surgery. Subjects and Methods. Retrospective analysis was performed on 282 cases of thyroid cancer surgery in our hospital from 2018 to 2019. All patients underwent total thyroidectomy and cervical central lymph node dissection. Nanocarbon was not used in the control group, but was used in the experimental group. The general situation of the patients, the number of postoperative lymph nodes and the number of metastasis were collected, and the differences between serum parathyroid hormone and blood calcium were compared before and on the 3rd and 30th day after surgery. Results. There was no difference in age, sex and TNM stage between the two groups (P > 0.05). The number of metastatic lymph nodes in the experimental group (9.80 ± 4.80) was different from that in the control group (6.95 ± 3.86) (P < 0.05), and the number of metastatic lymph nodes in the experimental group was different from that in the control group (χ2 = 14.968, P < 0.05). There was no difference in blood calcium and PTH between the two groups before and at 3 and 30 days after surgery (P > 0. 05). Conclusion. The application of carbon nanoparticles in thyroid cancer surgery can significantly increase the number of lymph nodes seized and the positive rate of metastatic lymph node removal, but the protection of parathyroid gland is not obvious.

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