A Subungual Exostosis Mimicking a Periungual Granuloma in a 9-Year-Old Boy: An Unexpected Dermoscopic Pattern

2021 ◽  
pp. 1-3
Author(s):  
Gianmarco Capasso ◽  
Gabriella Fabbrocini ◽  
Claudio Marasca
Keyword(s):  
Blood Vessel ◽  
Medical Literature ◽  
Vascular Ectasia ◽  
Peripheral Ring

Subungual exostosis (SE) is an uncommon osteocartilaginous tumor. Classic dermoscopic features of SE include vascular ectasia, hyperkeratosis, onycholysis, and ulceration. In this case, a 9-year-old boy presented SE showing a dermoscopic mesh dilated blood vessel pattern surrounded by a scar-like peripheral ring, which represents a novel finding in the medical literature.

scholarly journals A Comparative Study on “Mai” and “Blood Vessels” in Early Chinese and Western Medicine: Based on Hippocratic Corpus and Cauterization Canon of the Eleven Vessels of the Foot and Forearm

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
Chang Huang ◽  
Jiankang Liang ◽  
Qicheng Zhang ◽  
Tao Lu
Keyword(s):  
Blood Vessel ◽  
Blood Vessels ◽  
Human Body ◽  
Western Medicine ◽  
Medical Literature ◽  
Cultural Backgrounds ◽  
Internal Organs ◽  
Hippocratic Corpus ◽  
Time Period ◽  
The Ancient Chinese

This study compared the theory describing the “four pairs of blood vessels” in the Hippocratic Corpus with the description of vessels (Mai, 脉) in the Cauterization Canon of the Eleven Vessels of the Foot and Forearm. The two theories are comparable because of the time period in which they were written, the similarities between the descriptions of the Mai and blood vessels, and the treatment methods for symptoms corresponding to their dysfunctions. We discovered that the Mai theory and the blood vessel theory in the Hippocratic Corpus were conceived with similar motivations. They had a lot of coinciding information with regard to the route of flow, but they proposed opposite cyclic directions. Interestingly, neither of them had established that a definitive relationship exists between the vessels and the heart, but other internal organs, such as the liver, were considered to have connections with the Mai and blood vessels in the two literatures. Furthermore, there were similarities among the descriptions of symptoms, and the ancient Western treatments for these symptoms were largely the same as those recorded in the ancient Chinese medical literature, especially the treatment for backache. The comparisons put forward in this study not only reflect the consistencies between the understanding of the human body and the way diseases were treated in Chinese and Western medicine in the early days, but also demonstrate that the two types of medicine had finally embarked on different developmental paths because of the differences in the philosophies and cultural backgrounds in their respective regions.

An Ultrastructural Study of Pericytes

1968 ◽  
Vol 26 ◽  
pp. 66-67
Author(s):  
T. M. Murad ◽  
E. von Haam
Keyword(s):  
Plasma Membrane ◽  
Endothelial Cell ◽  
Basement Membrane ◽  
Blood Vessel ◽  
Vascular Endothelial Cells ◽  
Myoepithelial Cells ◽  
Capillary Blood ◽  
The Body ◽  
Capillary Blood Vessel ◽  
Outer Plasma Membrane

Pericytes are vascular satellites present around capillary blood vessels and small venules. They have been observed in almost every tissue of the body and are thought to be related to vascular smooth muscle cells. Morphologically pericytes have great similarity to vascular endothelial cells and also slightly resemble myoepithelial cells.The present study describes the ultrastructural morphology of pericytes in normal breast tissue and in benign tumor of the breast. The study showed that pericytes are ovoid or elongated cells separated from the endothelial cell of the capillary blood vessel by the basement membrane of endothelial cell. The nuclei of pericytes are often very distinctive. Although some are round, oval, or elongated, others show marked irregularity and infolding of the nuclear membrane. The cytoplasm shows mono-or bipolar extension in which the cytoplasmic organelles are located (Fig. 1). These cytoplasmic extensions embrace the capillary blood vessel incompletely. The plasma membrane exhibits multiple areas of focal condensation called hemidesmosomes (Fig. 2, arrow). A variable number of pinocytotic vesicles are frequently seen lining the outer plasma membrane. Normally pericytes are surrounded by a basement membrane which is found more consistently on the outer plasma membrane separating the pericytes from the stromal connective tissue.

A Trial Consultant's View of the Medical Expert Witness

2013 ◽  
Vol 18 (4) ◽  
pp. 7-10
Author(s):  
Deborah Rutt ◽  
Kathyrn Mueller
Keyword(s):  
Nonverbal Communication ◽  
Expert Testimony ◽  
Medical Literature ◽  
Expert Witness ◽  
Personal Injury ◽  
Expert Witnesses ◽  
Good Teacher ◽  
Medical Expert ◽  
Medical Terms ◽  
Medical Issues

Abstract Physicians who use the AMA Guides to the Evaluation of Permanent Impairment (AMA Guides) often serve as medical expert witnesses. In workers’ compensation cases, the expert may appear in front of a judge or hearing officer; in personal injury and other cases, the physician may testify by deposition or in court before a judge with or without a jury. This article discusses why medical expert witnesses are needed, what they do, and how they can help or hurt a case. Whether it is rendered by a judge or jury, the final opinions rely on laypersons’ understanding of medical issues. Medical expert testimony extracts from the intricacies of the medical literature those facts the trier of fact needs to understand; highlights the medical facts pertinent to decision making; and explains both these in terms that are understandable to a layperson, thereby enabling the judge or jury to render well-informed opinions. For expert witnesses, communication is everything, including nonverbal communication that critically determines if judges and, particularly, jurors believe a witness. To these ends, an expert medical witnesses should know the case; be objective; be a good teacher; state opinions clearly; testify with appropriate professional demeanor; communicate well, both verbally and nonverbally; in verbal communications, explain medical terms and procedures so listeners can understand the case; and avoid medical jargon, finding fault or blaming, becoming argumentative, or appearing arrogant.

Endoscopic mucosal resection for recurrent gastric antral vascular ectasia

VASA ◽  
2008 ◽  
Vol 37 (3) ◽  
pp. 289-292 ◽  
Author(s):  
Katsinelos ◽  
Chatzimavroudis ◽  
Katsinelos ◽  
Panagiotopoulou ◽  
Kotakidou ◽  
...  
Keyword(s):  
Endoscopic Mucosal Resection ◽  
Argon Plasma Coagulation ◽  
Argon Plasma ◽  
Deficiency Anemia ◽  
Gastric Antral Vascular Ectasia ◽  
Therapeutic Approaches ◽  
Plasma Coagulation ◽  
Vascular Ectasia ◽  
Mucosal Resection ◽  
First Case

Gastric antral vascular ectasia (GAVE) is an overt or occult source of gastrointestinal bleeding. Despite several therapeutic approaches have been successfully tested for preventing chronic bleeding, some patients present recurrence of GAVE lesions. To the best of our knowledge, we report the first case, of a 86-year-old woman who presented severe iron-deficiency anemia due to GAVE and showed recurrence of GAVE lesion despite the intensive argon plasma coagulation treatment. We performed endoscopic mucosal resection of bleeding GAVE with resolution of anemia.

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