Sinonasal Paraganglioma (SP) is also a benign mimic
of ONB which also exhibits a nesting pattern of tumor cells with positive neuroendocrine expression and surrounding S100 positive sustentacular cells.
Xanthogranulomatous sialadenitis, a benign mimic
Florid endocervical glandular hyperplasia with intestinal and pyloric gland metaplasia: worrisome benign mimic
of "adenoma malignum".
Finally, 7% of the participants favored a benign mimic
of PIN, including basal cell hyperplasia (3.7%), clear cell cribriform hyperplasia (1.2%), normal seminal vesicle (1.4%), and transitional cell metaplasia (0.7%).
Synovial sarcoma in children: imaging features and common benign mimics
. AJR Am J Roentgenol.
It can be difficult to differentiate from benign mimics
. IHC of SCMC shows positivity for cytokeratins denoting their epithelial origin, not evident in our case.
It may not be cost-effective to routinely perform IHC for the purpose of differentiating precancers and cancers from their benign mimics
, because the latter can be excluded using morphology in the majority of cases.
It emphasizes the morphologic features and immunohistochemistry of biopsies of the cervix, endometrium, and myometrium, as well as differential diagnosis and benign mimics
Immunohistochemical analysis of MDM2 and CDK4 distinguishes low-grade osteosarcoma from benign mimics
. Mod Pathol.
The many benign mimics
makes this criterion especially difficult, particularly for pathologists who see few endometrial biopsies.
Unlike AMACR, which can be negative in about 20% of unequivocal PCa; is positive in a subset of benign mimics
of PCa, including adenosis and partial atrophy; and may show focal staining in up to 20% of morphologically benign glands, (29-31) our results here confirm that ERG staining is highly specific for PCa and is exceedingly rare in benign glands (including mimickers of PCa).
In recent years, in addition to consulting on medical cases referred by pathologists, this group has published several articles on the differentiation of DMM from benign mimics
. (11-12) Since the late 1990s, the International Mesothelioma Panel has been headed by Francoise Galateau-Salle, MD, of Caen, France, who is also chair of the French Mesothelioma Reference Panel.