The phrase "a sharp margin" is correct and usable in written English.
It can be used to describe a clear or distinct boundary or difference between two things, often in contexts like finance, design, or comparisons.
Example: "The company reported a sharp margin between its profits and expenses, indicating strong financial health."
Alternatives: "a clear margin" or "a distinct margin".
Morphologic characteristics of a sharp margin and a high signal predict the presence of a hemangioma.
A sharp margin and lesion signal equal to or greater than CSF predicted the presence of a hemangioma (p = 0.0148 and p < 0.0001, respectively).
A sharp margin, lesion signal equal to or greater than CSF, and a homogeneous internal architecture all predicted the reader diagnosis of definitely or probably hemangioma.
Other features characteristic but not diagnostic of hemangioma include a sharp margin and internal homogeneity[ 25 29 ].
The coronal part of wedge-shaped defects ideally has a sharp margin and cuts at right angle into the enamel surface, whereas the apical part bottoms out to the root surface.
Besides this, in the nodular lesions of lepromatous leprosy, the peripheral limits of the infiltrate are infiltrative, whereas those in nodular PKDL have a fairly sharp margin [ 30].
While the (type II) odontoid fracture is typically associated with a flattened uncorticated sharp margin to the adjacent body of the axis and a normal morphology to the anterior arch of the atlas, the os odontoideum exhibits a well-corticated convex upper margin.
Optic nerve: check for a sharp disc margin (blurred disc margin may indicate papilledema from increased pressure inside the brain), as well as any swelling or blood.
While the (type II) odontoid fracture is typically associated with a flattened uncorticated sharp margin to the adjacent body of the axis and normal morphology to the anterior arch of the atlas, the os odontoideum exhibits a well-corticated convex upper margin and rounded hypertrophic anterior atlas arch (Fig. 10).
In both cases, this sign typically appears as a symmetrical oval shape, with sharp margins and a homogeneous, low signal intensity.
The patient was then referred to our hospital to undergo a bronchoscopy, which revealed a longitudinal hole with sharp margins at the posterior part of the membranous portion, extending up to 2 cm from the carina with a total length of 5 cm.
