Explanation

Clubbing (enlargement and rounding of the fingertips) is not typically associated with Plummer-Vinson syndrome.

Plummer-Vinson syndrome, also known as Paterson-Brown-Kelly syndrome, is characterized by the following features:

1. Dysphagia: Difficulty swallowing, typically due to esophageal webs.
2. Angular stomatitis (angular cheilitis): Inflammation and cracks at the corners of the mouth.
3. Anemia: Usually iron deficiency anemia, which contributes to other symptoms.
4. Pale conjunctiva: A sign of anemia.