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Popliteal pterygium syndrome, a congenital condition affecting the face, limbs, or genitalia but named after the wing-like structural anomaly behind the knee. Pterygium (eye) or surfer's eye, a growth on the cornea of the eye. Pterygium colli or webbed neck, a congenital skin fold of the neck down to the shoulders.
A pterygium of the eye (pl.: pterygia or pterygiums, also called surfer's eye) is a pinkish, roughly triangular tissue growth of the conjunctiva onto the cornea of the eye. [2] It typically starts on the cornea near the nose. [ 3 ]
Linnaean systems Systema Naturae, 1st edition, 1735. Systema Naturae, 10th edition, 1758 (vol. 1), 1759 (vol. 2).Starting point of zoological nomenclature. Species ...
In biology, taxonomy (from Ancient Greek τάξις () 'arrangement' and -νομία () 'method') is the scientific study of naming, defining (circumscribing) and classifying groups of biological organisms based on shared characteristics.
A webbed neck, or pterygium colli, is a congenital skin fold that runs along the sides of the neck down to the shoulders. There are many variants. There are many variants. Signs and symptoms
Phylogenetic nomenclature associates names with clades, groups consisting of an ancestor and all its descendants.Such groups are said to be monophyletic.There are slightly different methods of specifying the ancestor, which are discussed below.
Pterygium inversum unguis or ventral pterygium is characterized by the adherence of the distal portion of the nailbed to the ventral surface of the nail plate. [ 3 ] : 788 The condition may be present at birth or acquired, and may cause pain with manipulation of small objects, typing, and close manicuring of the nail.
Difference between pterygium and pseudopterygium Pterygium Pseudopterygium Etiology Degenerative process: Inflammatory process Age Common in adults [5] Occur in any age Site Horizontally, most commonly nasally [4] Anywhere Status Progressive(commonly) or stationary [5] Always stationary Neck Adherent to limbus [5] Free Probe test