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Tag: pathology
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Perineural invasion- Basics and Updates
Perineural invasion, abbreviated PNI, refers to the invasion of cancer to the space surrounding a nerve. It is common in head and neck cancer, prostate cancer and colorectal cancer. COMMON DEFINITION OF PERINEURAL INVASION The current widely accepted definition is “tumor in close proximity to nerve and involving at least 33% of its circumference or…
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Morphological endometrial patterns associated with exogenous progestins
Morphological endometrial patterns associated with exogenous progestins. 5 major patterns are associated with exogenous progestins. 2. Luteal (secretory-like pattern) 3. Inactive pattern 4. Apoplectic leiomyomas 5. Combined pattern In view of International pathology day, all our products are available for 25% off. Coupon code: International pathology day 25 Visit the link: http://www.pathologymcq.com/shop HAPPY LEARNING PATHOLOGY.
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Summary of sinonasal tumors- with latest updates- Weekly topic discussion
Summary of newly added entities of sinonasal tumors Some recent updates in sinonasal tumors- Based on WHO 2022 Reference– READ MORE regarding recent updates in sinonasal tumors.
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Interpretation of p53 IHC in serous carcinoma ovary
Historically, p53 IHC has been interpreted as negative or positive based on the percentage of stained tumor cell nuclei using variable cut-offs which range from 5 to 50%. More recently, a tripartite interpretation has been suggested, wherein an “overexpressed or no expression (all or nothing)” nuclear staining pattern is highly predictive of underlying TP53…
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Weekly topic covering MCQs- GIST (Gastrointestinal stromal tumor)
Weekly topic covering MCQ is a new feature- this focuses on a high-yield topic and discuss practical as well as theoretical aspects useful for exams. Let’s discuss some dilemmas related to the most common mesenchymal tumor of the Gastrointestinal system.GIST- Gastrointestinal stromal tumour Above image: Characteristic morphology of GIST associated with various mutations. Above image:…