Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
![Visual guidelines on classifying a nodule as a PFN according to de Hoop et al (32). A typical PFN was defined as “[a] fissure-attached, homogeneous, solid nodule that had smooth margins and an oval, lentiform, or triangular shape.” Atypical PFNs “either met all [typical PFN] features but were not attached to a fissure or were fissure-attached nodules, convex on one side and rounded on the other.” (Reprinted, with permission, from reference 32). PFN = perifissural nodule.](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bea/7978000/0964b3f36ecd/ryct.2020190159.fig2.jpg)
Visual guidelines on classifying a nodule as a PFN according to de Hoop et al (32). A typical PFN was defined as “[a] fissure-attached, homogeneous, solid nodule that had smooth margins and an oval, lentiform, or triangular shape.” Atypical PFNs “either met all [typical PFN] features but were not attached to a fissure or were fissure-attached nodules, convex on one side and rounded on the other.” (Reprinted, with permission, from reference 32). PFN = perifissural nodule.
