However, conclusions about the prognostic significance of these morphologic variants are hampered by poor reproducibility and a lack of consensus among pathologists [ 1– 3].
The inclusion criteria were restricted to: age above 18 years, a minimum 20 cases of site-specific OP-SCCs (morphologic variants were included), and HPV and p16 results stated.
It is not excluded that different morphologic variants represent different stages of disease progression in FSGS.
Schwannoma has several morphologic variants, that is, conventional, cellular, microcystic/reticular, plexiform, and melanotic schwannoma.
Several morphologic variants have been described, including mantle zone, nodular, and diffuse growth patterns.
Several morphologic variants of schwannoma are recognized, that is, conventional, cellular, microcystic/reticular, plexiform, and melanotic schwannoma [ 1, 2].
First, clinical and morphologic aspects of benign and malignant variants were compared between the species.
These phenotypic variants are characterized by their fastidious growth and atypical colony morphologic findings on routine media, making recovery as well as correct identification difficult for microbiologic laboratories (3, 5, 8 ).
Two variants are considered.
Variants are Keanu or Keeno.
