scholarly journals Needle-compatible miniaturized optoelectronic sensor for pancreatic cancer detection

2020 ◽  
Vol 6 (47) ◽  
pp. eabc1746
Author(s):  
Seung Yup Lee ◽  
Julia M. Pakela ◽  
Kyounghwan Na ◽  
Jiaqi Shi ◽  
Barbara J. McKenna ◽  
...  
Keyword(s):  
Pancreatic Cancer ◽  
Sampling Error ◽  
Objective Evaluation ◽  
Needle Aspiration ◽  
Current Approach ◽  
Comparable Performance ◽  
Optoelectronic Sensor ◽  
Confined Channel ◽  
Hollow Needle

Pancreatic cancer is one of the deadliest cancers, with a 5-year survival rate of <10%. The current approach to confirming a tissue diagnosis, endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA), requires a time-consuming, qualitative cytology analysis and may be limited because of sampling error. We designed and engineered a miniaturized optoelectronic sensor to assist in situ, real-time, and objective evaluation of human pancreatic tissues during EUS-FNA. A proof-of-concept prototype sensor, compatible with a 19-gauge hollow-needle commercially available for EUS-FNA, was constructed using microsized optoelectronic chips and microfabrication techniques to perform multisite tissue optical sensing. In our bench-top verification and pilot validation during surgery on freshly excised human pancreatic tissues (four patients), the fabricated sensors showed a comparable performance to our previous fiber-based system. The flexibility in source-detector configuration using microsized chips potentially allows for various light-based sensing techniques inside a confined channel such as a hollow needle or endoscopy.

Increse of newly - detected in situ cancers in non-palpable breast lesions

2006 ◽  
Vol 53 (1) ◽  
pp. 73-75
Author(s):  
N. Miletic ◽  
D. Stojiljkovic ◽  
M. Inic ◽  
M. Prekajski ◽  
A. Celebic ◽  
...  
Keyword(s):  
Breast Tissue ◽  
Malignant Disease ◽  
Clinical Stage ◽  
Diagnostic Procedures ◽  
Basal Membrane ◽  
Needle Aspiration ◽  
Screening Mammography ◽  
Significant Difference ◽  
Malignant Lesions

Great importance in detecting cancer in the phase of in situ lays in the fact that the epithelial layer is deprived of blood and lymph vessels, so metastases may develop only when basal membrane has been broken. This paper includes 46 operated women in whom it preoperatively had been verified suspect non-palpable lesion. The preoperative diagnostics included use of high- resolution mammography, aimed mammography, palpatory examination, as well as fine-needle aspiration (FNA), biopsy and cytologic analysis of the sample. The methodology of this work implies the use of stereotaxic marking, specimen mammography and ex-tempore pathohistology analysis. Out of 46 investigated patients in clinical stage T0N0M0, in whom there were no signs of malignant disease, and according to suspect lesion of initial screening mammography, malignant lesions of breast tissue were diagnosed in 19 patients (41%) intraoperatively. Three of these lesions (15,8%) were histopathologically verified as in situ. Comparing our results with data of the Institute of oncology and radiology of Serbia hospital registry (IORS) for the year 2001, from 1173 patients registered with malignant lesions, only 16 ones (1,4%) had in situ cancer, operated on the basis of the suspect mammography of clinical stage T0N0M0. Statistically significant difference was found related to the number of detected cancers in this early phase of the breast malignant disease. This limits surgical intervention to tumorectomy, with preservation of the remaining breast tissue, what brings to healing, justifying in that way, screening examinations and routine application of the most contemporary diagnostic procedures.

scholarly journals Infected Pancreatic Necrosis Mimicking Pancreatic Cancer

2020 ◽  
Vol 14 (2) ◽  
pp. 436-442
Author(s):  
Jun Heo
Keyword(s):  
Pancreatic Cancer ◽  
Abdominal Pain ◽  
Endoscopic Ultrasound ◽  
Fine Needle Aspiration ◽  
Pancreatic Necrosis ◽  
Necrotizing Pancreatitis ◽  
Needle Aspiration ◽  
Infected Pancreatic Necrosis ◽  
Ultrasound Guided ◽  
Fine Needle

Although infected pancreatic necrosis can develop as a result of rare conditions involving trauma, surgery, and systemic infection with an uncommon pathogen, it usually occurs as a complication of pancreatitis. Early phase of acute pancreatitis can be either edematous interstitial pancreatitis or necrotizing pancreatitis. The late complications of pancreatitis can be divided into pancreatic pseudocyst due to edematous interstitial pancreatitis or walled-off necrosis due to necrotizing pancreatitis. During any time course of pancreatitis, bacteremia can provoke infection inside or outside the pancreas. The patients with infected pancreatic necrosis may have fever, chills, and abdominal pain as inflammatory symptoms. These specific clinical presentations can differentiate infected pancreatic necrosis from other pancreatic diseases. Herein, I report an atypical case of infected pancreatic necrosis in which abdominal pain, elevation of white blood cell, and fever were not found at the time of admission. Rather, a 10-kg weight loss (from 81 to 71 kg) over 2 months nearly led to a misdiagnosis of pancreatic cancer. The patient was finally diagnosed based on endoscopic ultrasound-guided fine-needle aspiration. This case highlights that awareness of the natural course of pancreatitis and infected pancreatic necrosis is important. In addition, endoscopic ultrasound-guided fine-needle aspiration should be recommended for the diagnosis and treatment of indeterminate pancreatic lesions in selected patients.

scholarly journals Role of Endoscopic Ultrasonography and Endoscopic Retrograde Cholangiopancreatography in the Diagnosis of Pancreatic Cancer

Diagnostics ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 238
Author(s):  
Yasutaka Ishii ◽  
Masahiro Serikawa ◽  
Tomofumi Tsuboi ◽  
Ryota Kawamura ◽  
Ken Tsushima ◽  
...  
Keyword(s):  
Pancreatic Cancer ◽  
Endoscopic Retrograde Cholangiopancreatography ◽  
Endoscopic Ultrasonography ◽  
Treatment Decision ◽  
Needle Aspiration ◽  
Pancreatic Tumors ◽  
Decision Strategy ◽  
Endoscopic Retrograde ◽  
Small Pancreatic Cancer ◽  
Eus Elastography

Pancreatic cancer has the poorest prognosis among all cancers, and early diagnosis is essential for improving the prognosis. Along with radiologic modalities, such as computed tomography (CT) and magnetic resonance imaging (MRI), endoscopic modalities play an important role in the diagnosis of pancreatic cancer. This review evaluates the roles of two of those modalities, endoscopic ultrasonography (EUS) and endoscopic retrograde cholangiopancreatography (ERCP), in the diagnosis of pancreatic cancer. EUS can detect pancreatic cancer with higher sensitivity and has excellent sensitivity for the diagnosis of small pancreatic cancer that cannot be detected by other imaging modalities. EUS may be useful for the surveillance of pancreatic cancer in high-risk individuals. Contrast-enhanced EUS and EUS elastography are also useful for differentiating solid pancreatic tumors. In addition, EUS-guided fine needle aspiration shows excellent sensitivity and specificity, even for small pancreatic cancer, and is an essential examination method for the definitive pathological diagnosis and treatment decision strategy. On the other hand, ERCP is invasive and performed less frequently for the purpose of diagnosing pancreatic cancer. However, ERCP is essential in cases that require evaluation of pancreatic duct stricture that may be early pancreatic cancer or those that require differentiation from focal autoimmune pancreatitis.

scholarly journals Improvement of the Diagnosis of Isoattenuating Pancreatic Carcinomas by Defining their Characteristics on Contrast Enhanced Computed Tomography and Endosonography with Fine-Needle Aspiration (EUS-FNA)

Diagnostics ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 776
Author(s):  
Robert Psar ◽  
Ondrej Urban ◽  
Marie Cerna ◽  
Tomas Rohan ◽  
Martin Hill
Keyword(s):  
Computed Tomography ◽  
Pancreatic Cancer ◽  
Pancreatic Duct ◽  
Fine Needle Aspiration ◽  
Pancreatic Head ◽  
Needle Aspiration ◽  
Characteristic Analysis ◽  
Fine Needle ◽  
Contrast Enhanced ◽  
Secondary Signs

(1) Background. The aim was to define typical features of isoattenuating pancreatic carcinomas on computed tomography (CT) and endosonography and determine the yield of fine-needle aspiration endosonography (EUS-FNA) in their diagnosis. (2) Methods. One hundred and seventy-three patients with pancreatic carcinomas underwent multiphase contrast-enhanced CT followed by EUS-FNA at the time of diagnosis. Secondary signs on CT, size and location on EUS, and the yield of EUS-FNA in isoattenuating and hypoattenuating pancreatic cancer, were evaluated. (3) Results. Isoattenuating pancreatic carcinomas occurred in 12.1% of patients. Secondary signs of isoattenuating pancreatic carcinomas on CT were present in 95.2% cases and included dilatation of the pancreatic duct and/or the common bile duct (85.7%), interruption of the pancreatic duct (76.2%), abnormal pancreatic contour (33.3%), and atrophy of the distal parenchyma (9.5%) Compared to hypoattenuating pancreatic carcinomas, isoattenuating carcinomas were more often localized in the pancreatic head (100% vs. 59.2%; p < 0.001). In ROC (receiver operating characteristic) analysis, the optimal cut-off value for the size of isoattenuating carcinomas on EUS was ≤ 25 mm (AUC = 0.898). The sensitivity of EUS-FNA in confirmation of isoattenuating and hypoattenuating pancreatic cancer were 90.5% and 92.8% (p = 0.886). (4) Conclusions. Isoattenuating pancreatic head carcinoma can be revealed by indirect signs on CT and confirmed with high sensitivity by EUS-FNA.

236 Whole genomic assay on endoscopic ultrasound-guided fine needle aspiration samples of unresectable pancreatic cancer

2014 ◽  
Vol 50 ◽  
pp. 79
Author(s):  
J.M. Ha ◽  
K.H. Lee ◽  
J.K. Lee ◽  
K.T. Lee ◽  
W.Y. Park ◽  
...  
Keyword(s):  
Pancreatic Cancer ◽  
Endoscopic Ultrasound ◽  
Fine Needle Aspiration ◽  
Needle Aspiration ◽  
Unresectable Pancreatic Cancer ◽  
Ultrasound Guided ◽  
Fine Needle

scholarly journals Detection of Circulating Tumor Cells Using Negative Enrichment Immunofluorescence and an In Situ Hybridization System in Pancreatic Cancer

2017 ◽  
Vol 18 (4) ◽  
pp. 622 ◽  
Author(s):  
Yu Xu ◽  
Tai Qin ◽  
Jing Li ◽  
Xiuchao Wang ◽  
Chuntao Gao ◽  
...  
Keyword(s):  
Pancreatic Cancer ◽  
In Situ Hybridization ◽  
Tumor Cells ◽  
Circulating Tumor Cells
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