La carnosidad o pterigión es un crecimiento carnoso, en forma de cuña, en la córnea del ojo. Este crecimiento ¿Cuál es el tratamiento para la carnosidad?. 1 Mar Recent Posts. Test. Recent Comments. Archives. January Categories. Uncategorized. Meta. Log in · Entries RSS · Comments RSS. La carnosidad (pterigion) es un crecimiento de un tejido el cual invade la cornea (la ventana transparante del ojo). Es un proceso anormal la cual conjuntiva (es.
|Published (Last):||6 September 2010|
|PDF File Size:||15.96 Mb|
|ePub File Size:||5.11 Mb|
|Price:||Free* [*Free Regsitration Required]|
The graft may be sutured or fixed through adherent substances such as fibrin Tissucol TM.
How is it treated? Histochemical studies and molecular biology show that in the pterygium, the LESC Limbal Epithelial Stem Cells pterigion tratamiento a mutated tumour suppressor pterigion tratamiento that causes the presence of protein p53 11,12a common marker in various human cancers and in lesions of actinic skin 13which suggests that pterygium would be a proliferative disorder similar to a tumour.
If possible, non-inflammatory sutures must be used, like nylon, since vicryl being of resorbable type more commonly used might encourage fibrovascular re-growth.
C Pterygium growing yratamiento the cornea. Once pterigion tratamiento barrier of the cornea is weakened, the progression of the fibrovascular tissue occurs by the presence of inflammatory factors, cytokines and pro-angiogenic factors especially the presence of VEGFand growth factors of fibroblast particularly TGF-Beta.
B Pterigion tratamiento reaction in limbus is increased. It is thought that the main trigger factor pterigionn the ultraviolet-light pterigion tratamiento, therefore the incidence is much higher in equatorial countries, with high rates of insolation It has even been proposed the instillation of Tratamienro C as eye drops in complex cases, where recurrence would likely happen. If possible, it is also better to use a conjunctival graft of the same eye, taken pterigion tratamiento the superior bulbar conjunctiva.
In recent years, we observed an increase in the incidence of pterygium, both pterigion tratamiento and recurrent. A pterigion tratamiento response curve Ttratamiento J Ophthalmol Potential role of angiogenesis. Active matrilysin MMP-7 in human pterigia.
It is unclear the cause of relapses but everything suggests pterigion tratamiento there is still some degree of inflammatory reaction and a limbus condition pterigion tratamiento facilitates the new fibrovascular proliferation and corneal invasion, as well as the persistence of the casual factor, the UV radiation; for it is necessary to take these three factors much into account. The standard treatment is surgery: B The size of pterigion tratamiento lesion and vascularization increases.
First, it is obvious that we must protect the eyes from the UV light. The third factor, the prevention of recurrent corneal invasion, involves taking a series of surgical measures. Then, the injury begins at the nasal side, which it is more protected from the sunlight, even though it seems a contradiction. C The inflammatory reaction increases and begins to take the triangular-shaped aspect that will turn into pterygium.
Consequently, fibrovascular proliferation, remodelling of connective tissue, angiogenesis and corneal invasion occur. This is pterigion tratamiento crucial data when treating pterygium surgically: J Am OptomAssoc In summary, UV pterigioon pterigion tratamiento micro trauma lead to a chronic inflammatory process, with function loss of the natural barrier of the corneal conjunctival limbus.
Pterigion tratamiento first UV light effect on the tissues is an elastic degeneration of the own subconjunctival substance.
The origin of this tissue proliferation is derived from the basal epithelial stem cells of the limbal bed LESCthat are activated pterigion tratamiento transformed into conjunctival tissue 2. The head of the pterygium must be dissected from the pterigion tratamiento cornea, reaching out its deeper layers and removing it entirely. Studies pterigion tratamiento the effectiveness ptegigion this drug, its application to 0.
Curr Eye Res Good results in this sense have been reported, both for the incidence of recurrence as for the recovery after surgery. Invest Ophthalmol Vis Sci Other drugs, such as Thiotepa or 5-Fluorouracil 20 have not tratamisnto the same level of effectiveness.
CARNOSIDAD, PTERIGION, CARNOSIDAD TRATAMIENTO, PTERYGIA, PTERYGIUM
P53 pterigion tratamiento in altered limbal basal cells in pingueculae, pterygia and limbal tumors. After the removal, traatamiento it is of small size, the pterigion tratamiento is concluded after suturing the edges of the healthy conjunctiva.
In the postoperative period, it is also necessary to control inflammation, especially in the early stages, thus it is indispensable to administer topical steroids. Pterigion tratamiento, we shall stress to the patients to avoid this type of radiation, either by reducing their exposure to sunlight or using good quality wrap-around sunglasses that have the right UV filter.
The UV light activates fibroblasts that generate pterigion tratamiento elastin and can not be degraded by elastase 9, A Corneal invasion starts. As for the second factor, the inflammatory reaction, it is necessary to take pre-operative, intraoperative and postoperative measures. The implications of the p53 gene mutation is that LESC grow uncontrolled 14migrate and grow onto the cornea through the basal membrane 15dragging along conjunctival cells and inducing the formation of fibrovascular tissue at this level, due to increased levels of inflammatory mediators, proliferative and angiogenic factors, such as found in the histopathologic pterigion tratamiento histochemical analysis Review of treatmen of pterygium in Queensland, 10 years of primary surgery.
Arch Ophthalmol Imnunohistochemical study of p53, p21 and PCNA in pterygium. Pterigion tratamiento dosage of mitomicyn C for prevention of recurrent pterygium.
Thus, tratamienot decided to write this article and make a review of the physiopathology of this process to establish guidelines in order to improve its treatment. oterigion