Aortic dissection typically presents acutely with sudden, severe tearing chest or back pain, often described as lancinating in quality. [5-6] Approximately 50% of patients with thoracic aortic aneurysm may progress to dissection without timely intervention. [5] In contrast, thoracic aortic aneurysm is usually asymptomatic and discovered incidentally during physical examination or imaging for other indications. [5]

When possible, use the most authoritative source in your work, but one should balance this out with the additional work required to find and quote that source versus taking it from a secondary and reliable source.

Academic researchers ought to default to the original and most authoritative, but others may find it more expedient and just as valuable to rely on secondary sources.

An example of someone (u/Nervous-Deal7560) using the Wakandan writing system to distinguish their ideas from those of sources!

see also: - https://omniglot.com/conscripts/wakandan.htm - https://www.fandom.com/articles/how-the-black-panther-writing-system-subverts-our-expectations-of-africa

Jared Henderson writes excerpted ideas in block capital letters and his own observations and thoughts in small print as a means of distinguishing his own ideas from others.

Others might do this using other means: fonts, color, writing instrument, etc.