The expansive lesions, whether tumoral or not, originated at the level of the anatomical region of the skull base (SB), show a great histologic variety and clinicaly they cause a variable chronic neurological disfunction.
This is being done through a variety of histologic, immunohistochemical, and molecular studies in both the dog and cat.
A variety of histologic grading systems for ovarian carcinoma have been used, but there is no widely accepted system.
Significant negative prognostic factors include stage, size, evidence of metastasis and a variety of histologic criteria.
These observations demonstrate that a variety of histologic and molecular features of fibrosis associated EMT can be observed in the heterotopic intestinal grafts [22].
The histological spectrum of the melanocytic nevi is bewildering and diverse, with a variety of histologic, anatomic, architectural, and cellular patterns.
With larger and more detailed sensitivity/specificity studies that correlate image-based features with a wide variety of histologic presentations, this limitation can be mitigated.
For decades, pathologists have used a variety of histologic features, including desmoplastic stromal reaction, intrastromal foreign body reaction to keratin, and the presence of separate minute clusters of intrastromal neoplastic cells, to assess and identify invasion[ 8, 9].
At the same time, surface epithelial tumors of the ovary display a wide variety of histologic types which may reflect pathogenetic variability and/or differences among the cell(s) of origin.
Non-glial tumors are much less frequent and include a variety of histologic subtypes such as hemangioblastoma, subependymoma, ganglioglioma, paraganglioma, lymphoma, primitive neuroectodermal tumor (PNET) neurocytoma, oligodendroglioma and metastases.
