1. Osler Institute – Pathology Board Review: Electron Microscopy EM of Tumors and Tumor-like Entities

2. Electron Microscopy - Osler Institute Pathology Board Review Neoplasms Oncocytoma Salivary gland Parotid Kidney

3. Electron Microscopy - Osler Institute Pathology Board Review Neoplasms Oncocytoma Pleomorphic mitochondria Lamelliform (plate like) mitochondrial cristae Dense bodies in mitochondria

4. Electron Microscopy - Osler Institute Pathology Board Review Neoplasms Plasmacytoma Nuclei Marginated heterochromatin Prominent profiles of rough endoplasmic reticulum Immunoglobulin inclusions in RER and nucleus

5. Electron Microscopy - Osler Institute Pathology Board Review Neoplasms Renal Cell Carcinoma (conventional type) Long microvilli Glycogen Lipid droplets

6. Electron Microscopy - Osler Institute Pathology Board Review Neoplasms Renal Cell Carcinoma Chromophobe Type Microvesicles Hale’s colloidal iron positive Papillary (chromophil) Type Abundant mitochondria

7. Electron Microscopy - Osler Institute Pathology Board Review Neoplasms Seminoma Wandering, ropy, nucleolus Finely dispersed heterochromatin Inconspicuous organelles Intercellular junctions

8. Electron Microscopy - Osler Institute Pathology Board Review Neoplasms Squamous cell carcinoma Desmosomes Tonofilament bundles

9. Electron Microscopy - Osler Institute Pathology Board Review Small Round Cell Tumors

10. Electron Microscopy - Osler Institute Pathology Board Review Neoplasms Small Round Cell Tumors Ewings Sarcoma Dispersed heterochromatin Small nucleolus

11. Electron Microscopy - Osler Institute Pathology Board Review Neoplasms Small Round Cell Tumors Ewings Sarcoma Large pools of glycogen

12. Electron Microscopy - Osler Institute Pathology Board Review Neoplasms Small Round Cell Tumors Rhabdomyosarcoma Actin-myosin filaments with Z- band Primitive sarcomeres

13. Electron Microscopy - Osler Institute Pathology Board Review Neoplasms Small Round Cell Tumors Rhabdomyosarcoma Ribosome-filament complexes Small primitive junctions External lamina

14. Electron Microscopy - Osler Institute Pathology Board Review Neoplasms Small Round Cell Tumors Neuroblastoma Cell processes Secretory granules Microtubules Neurofilaments

15. Electron Microscopy - Osler Institute Pathology Board Review Neoplasms Small Round Cell Tumors Lymphoma (Follicular Center Cell) No cell junctions