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Endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) is a minimally invasive procedure for acquiring biopsies in gastric regions that are hard to reach otherwise (e.g. the pancreas). Endoscopic ultrasound EUS-FNA of cystic lesions, followed by liquid cell analysis, has been used as a diagnostic tool for differentiating benign ...
Endoscopic ultrasound (EUS) or echo-endoscopy is a medical procedure in which endoscopy (insertion of a probe into a hollow organ) is combined with ultrasound to obtain images of the internal organs in the chest, abdomen and colon. It can be used to visualize the walls of these organs, or to look at adjacent structures.
Fine-needle aspiration. Fine-needle aspiration (FNA) is a percutaneous ("through the skin") procedure that uses a fine needle and a syringe to sample fluid from a breast cyst or remove clusters of cells from a solid mass. [6] It is mainly used to differentiate between a cyst and a mass. [6]
Ultrasound imaging is useful as the first-line, non-invasive investigation in determining the size, texture, position, and vascularity of a nodule, accessing lymph nodes metastasis in the neck, and for guiding fine needle aspiration cytology (FNAC) or biopsy.
Endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) of cystic lesions, followed by liquid cell analysis, has been used as a diagnostic tool for differentiating benign, potentially malignant, and malignant pancreatic cysts.
Colloid nodules may be initially identified as an unspecified kind of thyroid nodule. Follow-up examinations typically include an ultrasound if it is unclear whether or not there really is a nodule present. Once the presence of a nodule has been confirmed, the determination of the kind of thyroid nodule is done by fine needle aspiration biopsy. [7]
Clinical evaluation is usually done with ultrasound studies, which will usually show a solid, well demarcated mass, often showing limited shadowing (hypoechoic). Depending on the specific character on ultrasound and other clinical findings, a fine needle aspiration is often performed. [citation needed]
Ultrasound system: A console, or a portable system, which includes a monitor and a transducer, and utilizes ultrasound to image body tissues. To image the thyroid and parathyroid glands and neck lymph nodes; also, to guide diagnostic fine needle aspiration [4] or therapeutic ethanol injection to these organs. [5]