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Brenner Tumor and Transitional Cell Carcinoma of the Ovary | ES Ch'ng
https://eschng.wordpress.com/2011/04/18/brenner-tumor-and-transitional-cell-carcinoma-of-the-ovary
ES Ch'ng's Blog. April 18, 2011 • 5:16 pm. Brenner Tumor and Transitional Cell Carcinoma of the Ovary. Epithelial ovarian tumors that resemble those of transitional cell neoplasms of the urinary tract. Subclassified into Brenner tumors (benign, borderline or malignant) and transitional cell carcinomas. 1 2% of all ovarian neoplasms. Average age at presentation 50 years:. Sometimes signs of hyperestrinism. Such as postmenopausal uterine bleeding from endometrial hyperplasia. Slow rate of growth. Borderlin...
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Intraductal Papilloma of the Breast | ES Ch'ng
https://eschng.wordpress.com/2011/04/18/intraductal-papilloma-of-the-breast
ES Ch'ng's Blog. April 18, 2011 • 5:27 pm. Intraductal Papilloma of the Breast. Benign intraductal papillary lesion with distinct epithelial and myoepithelial proliferation. Average age 48 years. Palpable in subareolar location. Diameter rarely 3 cm. Arise in smaller ducts. Usually no nipple discharge. Arises in large or small ducts. Suggests existence of common cell precursor that can differentiate into:. May be areas of hemorrhage. Duct that contains papilloma may be dilated. Nearly always no necrosis.
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Epithelioid cell histiocytoma | ES Ch'ng
https://eschng.wordpress.com/2011/04/19/epithelioid-cell-histiocytoma
ES Ch'ng's Blog. April 19, 2011 • 1:04 pm. Also known as epithelioid fibrous histiocytoma, is a peculiar dermal tumor, which can mimic melanocytic, vascular, epithelial, or other histiocytic lesions. Is thought to arise from dermal dendrocytes. ECH is a vascular fibrous histiocytoma. Approximately 50% FXIIIa histiocytic dendrocytes. Tongue (lingual epithelioid cell histiocytoma). ECHs are speculated to originate from dermal microvascular unit. Followed by an influx of histiocytes and mast cells. Consiste...
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Soft Tissue Extraskeletal Osteosarcoma | ES Ch'ng
https://eschng.wordpress.com/2011/04/23/soft-tissue-extraskeletal-osteosarcoma
ES Ch'ng's Blog. April 23, 2011 • 11:00 am. Soft Tissue Extraskeletal Osteosarcoma. Malignant, stromal, soft tissue tumor with differentiation into osteoblasts, with formation of bone, with or without fibroblastic or cartilaginous components. Small proportion arise following exposure to X-rays. Osteoid and bone formation by tumor cells without interposition of cartilage. Predominant histologic pattern may be:. Analogous to parosteal osteosarcoma. Special Stains and Immunohistochemistry. An error has occu...
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Sinonasal Glomangiopericytoma | ES Ch'ng
https://eschng.wordpress.com/2011/05/05/sinonasal-glomangiopericytoma
ES Ch'ng's Blog. May 5, 2011 • 3:06 pm. 1% of sinonasal tumors. Cellular spindle cell neoplasm with characteristic hemangiopericytoma-like vessels and frequent perivascular hyalinization of the capillary-sized vessels. Frequently a thin, tumor-free zone lies between the basement membrane of the surface epithelium overlying these tumors and the neoplastic cells. Neoplastic cells lack prominent cell borders, resulting in a syncytial appearance. Ve: desmin, s-100, CD34, CD99, BCL-2, CD117, CK. Intraductal P...
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New Page for New Phase of Study. | ES Ch'ng
https://eschng.wordpress.com/2011/04/08/hello-world
ES Ch'ng's Blog. April 8, 2011 • 4:24 pm. New Page for New Phase of Study. I created this new blog to document my last step of learning process in pursuing the Master of Pathology. April 8, 2011 at 4:24 pm. Hi, this is a comment. To delete a comment, just log in, and view the posts’ comments, there you will have the option to edit or delete them. Leave a Reply Cancel reply. Enter your comment here. Fill in your details below or click an icon to log in:. Address never made public). About ES Ch’ng.
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Metaphyseal Fibrous Defect | ES Ch'ng
https://eschng.wordpress.com/2011/05/09/metaphyseal-fibrous-defect
ES Ch'ng's Blog. May 9, 2011 • 1:57 pm. Eccentric, sharply delineated, metaphyseal lesion in long bones of adolescents; associated with adamantinomas of long bones. Also known as non-ossifying fibroma or benign fibrous histiocytoma if mass-forming and involving the medullary cavity. Few or no symptoms except pain. Usually found incidentally on radiography. Fractures can occur through the thinned cortex. Controversy regarding whether neoplastic or developmental aberration at epiphyseal plate. You are comm...
