Histopathology of Osteosarcoma

Anatomy, Histology, and Cell Biology PreTest Self-Assessment and Review, Third Edition (PreTest Basic Science)

This one-of-a-kind test prep guide helps you to test your knowledge of essential anatomy, histology and cell biology concepts for the USMLE Step 1; practice with 500 USMLE Step 1-style questions with referenced answers; review explanations for right and wrong answers;and build confidence, skills, and knowledge.

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Eyelid hemangioma

Eyelid hemangiomas that present congenitally or in early infancy are ususally of the capillary type ("strawberry marks"). These lesions are considered hemartomas.

Histopathologically, these lesions are densely cellular and consist of numerous small, blood-filled channels lined by plump endothelial cells with associated pericytes and little contribution from larger vessels or stroma . They may appear after birth but usually cease growing by one year of age. Complete spontaneous regression by five years of age is the rule (in 80-90%).

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Histopathology Bone--Multiple myeloma

Schwannoma (Histology)

Notice the whirly swirly pattern and how the cell nuclei are closely bunched together... almost as if they're forming a fence (Verocay bodies). Schwannomas are benign spindle cell tumors that occur along the edges of peripheral nerves. They can usually be removed without damaging the nerve itself.

Compact and Spongy Bones

The bone tissue has 2 types of differ in density......> compact and spongy

1-Compact Bone:

Compact bone consists of closely packed "osteons or haversian systems". The osteon consists of a central canal called the osteonic (haversian) canal, which is surrounded by ............

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Megaloblastic anaemia is a disorder of the bone marrow. There is a presence of erythroblasts in the bone marrow with delayed nuclear maturation because of defective DNA synthesis.

In megaoblastic anaemia Erythrocytes are larger and have higher nuclear-to-cytoplasmic ratios compared to normoblastic cells.
Neutrophils can be hypersegmented, and megakaryocytes are abnormal. Risk Factors for Megaloblastic anaemia are Vitamin B12 deficiency ,Folic acid deficiency and Conditions with neither B12 nor folate deficiency, e.g. orotic aciduria, where there is a defect in pyrimidine synthesis, therapy with drugs interfering with DNA synthesis and myelodysplasia.

Color Atlas of Cytology, Histology, and Microscopic Anatomy

This timeless pocket atlas is the ideal visual companion to histology and cytology textbooks. First published in 1950 and translated into eight languages, Kuehnel’s Pocket Atlas of Cytology, Histology and Microscopic Anatomy is a proven classic.
The fully revised and updated fourth edition contains 745 full-color illustrations – almost 200 more than were included in the third edition. Superb, high-quality microphotographs and pathologic stains are accompanied by legends, informative texts, and numerous cross-references.

Nodular hyperplasia of Prostate: Histopathology

Histopathology Ovary--Serous cystadenocarcinoma

Histopathology Lung--Bronchiectasis

Connective Tissue Histology

Shave and Punch Skin Biopsy

C. D. Review of Skeletal Muscle Tissue

This Video is recorded off a cd-room. there may be some background noises, SORRY for that