The term I think you are looking for is "well circumscribed hypo-echoic nodule."
The phrase well circumscribed means that the item looked at has well defined edges. When talking about nodules or tumors in the body, it is generally a good thing.
The phrase hypo-echoic means that it did not reflect a lot of waves back to the sensor.
Since I have to assume you are seeing an ultrasound...the answer is no...it is not a nonviable pregnancy...in early pregnancy the conceptus in a horse is a circular ball that looks black in the center because it is fluid filled...as the conceptus changes into an embryo and subsequently a fetus it be comes white because the tissue is hyper-echoic (white) as opposed to hypo-echoic (black) fluid.
What is Hypoechoic to Isoechoic Nodule
I am not use what it means when been circumcised as a large. When a boy is born they parents have a choice to get him circumcised.
Dehydration.
Hyper - higher than normal Hypo - lower than normal
There's blood supply inside of it not just leading to it
Thyroid cysts are nodules filled with fluid. They can be small or large. If a nodule has both solid and fluid parts, it is called a complex nodule, and need to be removed if they cause pain or difficulty when swallowing.
A thyroid nodule is simply a mass in your thyroid. Hyperechoic is a term used in ultrasound which determines how bright or dark the nodule is. Ultrasound is all black, white, and gray scales, so a hyperechoic nodule would be a mass in the thyroid that is BRIGHTER than the rest of the thyroid tissue.
The Greek prefix "hypo-" has several meanings: under, below, less than, smaller, etc.
The prefix "hypo-" means below, beneath, or deficient, often used to indicate a lower quantity or intensity.
A partially obscured nodule by dependent atelectasis refers to a lung nodule that is not fully visible on imaging due to the presence of atelectasis, which is the partial collapse of lung tissue. This can occur when the lung tissue adjacent to the nodule collapses, obscuring part of the nodule's visibility. It suggests that the nodule may be present, but its assessment may be complicated by the surrounding collapsed lung, necessitating further imaging or clinical evaluation to clarify its characteristics.
In medical terms, a nodule is a lump that appears on the skin. It is classed as a nodule when it reaches 0.5 centimetres in size. Nodules can appear anywhere on the body.