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Cysts cause posterior enhancement as a consequence of reduced attenuation of the ultrasound within the cyst fluid (Figure 5). The simple cyst is a benign lesion, which does not require further evaluation. [1] Complex cysts can have membranes dividing the fluid-filled center with internal echoes, calcifications or irregular thickened walls.
These account for 8% of the sinuses and cysts of the neck. They are lateral to the facial nerve and run parallel to the external auditory canal. [9] Second branchial cleft cysts - These account for 90 to 95% of the neck cysts. Anterior to sternocleidomastoid muscle, posterior to submandibular gland, lateral to carotid sheath. They are medial to ...
Ultrasound is used as the first imaging modality, and often shows hypo-echoic, sometimes septated cyst that runs along the sternocleidomastoid muscle. Other imaging techniques such as CT and MRI can also be used. These are more useful for determining the cyst's relationship to the surrounding structures and planning for the surgery. [3]
A branchial cyst, a.k.a. a branchial cleft cyst, is a small, fluid-filled sac that an look like a lump under the skin on the side of your neck, according to the Cleveland Clinic. They can appear ...
The standard representation is brighter color for higher echogenicity, giving the almost anechoic fluid an almost black appearance. Echogenicity (sometimes as echogenecity) or echogeneity is the ability to bounce an echo, e.g. return the signal in medical ultrasound examinations. In other words, echogenicity is higher when the surface bouncing ...
Congenital cartilaginous rest of the neck (CCRN) is a minor and very rare congenital cutaneous condition characterized by branchial arch remnants that are considered to be the cervical variant of accessory tragus. [2] [3] It resembles a rudimentary pinna that in most cases is located in the lower anterior part of the neck. [3]
An appropriate differential diagnosis depends upon location of the ectopic thymus. For cervical ectopic thymus, the differential diagnosis should include additional causes of neck masses. This includes common causes of neck masses in children, including: thyroglossal duct cyst. [6] [10] branchial cleft cyst. [10] dermoid cyst. [10]
Medical ultrasound includes diagnostic techniques (mainly imaging techniques) using ultrasound, as well as therapeutic applications of ultrasound. In diagnosis, it is used to create an image of internal body structures such as tendons, muscles, joints, blood vessels, and internal organs, to measure some characteristics (e.g., distances and velocities) or to generate an informative audible sound.