n this issue of the Journal, a clinical investigation by Ozaki et al focuses on the flushing solution used for image acquisition with frequency-domain optical coherence tomography (FD-OCT).1 The authors present the cross-sectional area measurement as a quantitative evaluation using low-molecular dextran L (LMD-L) approximate to that of contrast media, and the non-inferiority of LMD-L to contras...

An element of a ring $R$ is called clear if it sum unit-regular and unit. associative each its elements clear.In this paper we defined rings extended many results to wider class. Finally, proved that commutative Bezout domain an elementary divisor only every full $2\times 2$ matrix over nontrivially clear.

•A histologically low-grade cervical clear cell lesion was observed.•Proliferating cells were seen only at the periphery of this lesion.•Due to its low proliferation index, this may represent a precursor of clear cell carcinoma.•Further definition of such lesions may allow for more minimal management.

Purpose. Clear cell chondrosarcoma is a rare variant of chondrosarcoma. Six cases are herein reported.Subjects. We have treated six patients with clear cell chondrosarcoma in the past 28 years, representing 1.6% of all chondrosarcomas seen in this time period.Results and Discussion. Half the patients had been initially underdiagnosed and inappropriately treated.Conclusions. Our results and our ...