Breast metastasis of cervical cancer: A case report and systematic literature review.

It has been reported that extramammary malignant tumors metastasize to the breast, but cervical cancer metastasis to the breast is very rare. At present, there are only dozens of reports about cervical cancer metastasis to breast in the world. It is difficult to distinguish between primary breast cancer and metastatic breast cancer.

Value of ultrasound-guided transforaminal nerve block in the treatment of lumbar disc herniation.

Objective: This study was performed to investigate the effectiveness and safety of ultrasound-guided transforaminal nerve block in the treatment of lumbar disc herniation.

Methods: Sixty patients who underwent treatment for protrusion of a lumbar intervertebral disc in Wangjing Hospital from January 2016 to December 2017 were divided into the study group and the control group. The visual analog scale (VAS) pain scores, the Japanese Orthopaedic Association (JOA) scores of the lumbar vertebra, PRI (pain rating index), and PPI (present pain intensity) were recorded at 30 minutes, 1 week, and 3 months after the operation.

Clinicopathologic significance of HIF-1α, CXCR4, and VEGF expression in colon cancer.

We investigated the clinicopathologic significance of HIF-1, CXCR4, and VEGF expression using immumohistochemistry in human colon cancer. HIF-1, CXCR4, and VEGF high expression levels were correlated positively with TNM stage, lymph node involvement, and distant metastasis Furthermore, we found that combined high expression of any two of the three molecules (P = .028 for HIF-1/CXCR4, P = .

A rapidly convergent series for calculation of the interaction between two similar plane double-layers for z+/z- = -2 asymmetric electrolytes at positive surface potential.

A rapidly convergent series for calculation of the interaction energies between two similar plane double-layers for z+/z- = -2 asymmetric electrolytes at positive surface potential are obtained by introducing a parameter lambda in elliptical integral. When dimensionless surface potential is less or equal to 20, the number of the series terms required to obtain the interaction energies with six significant digits are not more than 4. The accurate numeral results are given and they can be used to check up the validity of approximate expressions people obtain.