A limbal nodule is any nodular lesion at the
limbus
Limbus (Lat. "edge, boundary") may refer to:
* Corneal limbus, the border of the cornea and the sclera (the white of the eye)
* Limbus of fossa ovalis, in the heart
* Limbus 3 and Limbus 4, two line-ups of a German avant-garde musical group
* Li ...
(junction of the
cornea and
sclera
The sclera, also known as the white of the eye or, in older literature, as the tunica albuginea oculi, is the opaque, fibrous, protective, outer layer of the human eye containing mainly collagen and some crucial elastic fiber. In humans, and som ...
) of the
eye
Eyes are organs of the visual system. They provide living organisms with vision, the ability to receive and process visual detail, as well as enabling several photo response functions that are independent of vision. Eyes detect light and conv ...
.
The
differential diagnosis
In healthcare, a differential diagnosis (abbreviated DDx) is a method of analysis of a patient's history and physical examination to arrive at the correct diagnosis. It involves distinguishing a particular disease or condition from others that p ...
for a limbal nodule can include:
*
Pinguecula
*Early
Pterygium
*
Foreign body
A foreign body (FB) is any object originating outside the body of an organism. In machinery, it can mean any unwanted intruding object.
Most references to foreign bodies involve propulsion through natural orifices into hollow organs.
Foreign bo ...
/ foreign body granuloma
*
Phlycten, an inflamed nodule of lymphoid tissue
*
Episcleritis
*
Scleritis
Scleritis is a serious inflammatory disease that affects the white outer coating of the eye, known as the sclera. The disease is often contracted through association with other diseases of the body, such as granulomatosis with polyangiitis or rhe ...
*
Granuloma
A granuloma is an aggregation of macrophages that forms in response to chronic inflammation. This occurs when the immune system attempts to isolate foreign substances that it is otherwise unable to eliminate. Such substances include infectious ...
*
Limbal dermoid Choristomas, a form of heterotopia, are masses of normal tissues found in abnormal locations. In contrast to a neoplasm or tumor, the growth of a choristoma is normally regulated.
It is different from a hamartoma. The two can be differentiated a ...
, a kind of
choristoma (NB: in other organs ''dermoid'' can refer to a
teratoma)
* malignant melanoma
* naevus
References
*
{{DEFAULTSORT:Limbal Nodule
Eye diseases