Jan 1, 2012 · Bone tissue can be classified based on texture, matrix arrangement; also maturity and developmental origin (see Histology topic) Based on texture, bone can be classified as Compact bone (dense bone, cortical bone): dense bone that surrounds trabecular bone in the center, contains Haversian system and secondary osteons

F-N: fibrodysplasia ossificans progressiva fibrosarcoma of bone fibrous dysplasia fracture ganglion cyst giant cell tumor of bone, malignant giant cell tumor of bone, NOS gout and gouty arthritis grossing, frozen section & features to report hemangioma high grade surface osteosarcoma histology-bone histology-joints implant related changes ...

Dec 10, 2021 · Cells derived from hematopoietic progenitor cells involved in bone resorption, primarily due to remodeling and not calcium homeostasis Along endosteal surface of bony trabeculae (reside in Howship lacunae) or along margins in marrow smears Common in children (active bone remodelling); in adults associated with metabolic or neoplastic diseases

Dec 10, 2021 · Remodeling is a continuous process, in which damaged bone is repaired, ion homeostasis is maintained, and bone is reinforced for increased stress; entire remodeling cycle requires ~ 6 months In healthy adults, remodeling rate varies by type of bone: 25% per year in trabecular bone versus 3% in cortical bone

Skin (Am J Surg Pathol 2017;41:1542, Mills: Histology for Pathologists, 5th Edition, 2019) Thin skin covering

Sep 5, 2023 · Intermediate or spongy layer: potential space between the amnion and chorion, which results from incomplete fusion of amnionic and chorionic mesoderm during early pregnancy; this intermediate layer is composed of loosely arranged bundles of collagen fibers with a few scattered fibroblasts, separated by a communicating system of clefts and ...

Dec 13, 2024 · White to gray, diffuse, painless, spongy and folded plaques on buccal mucosa Case reports 33 year old man with buccal lesion, no family history ( Dermatol Online J 2008;14:16 )

Nov 1, 2014 · Medullary cavity (medulla, innermost part) of bone is the central cavity where red bone marrow or yellow bone marrow (adipose tissue) is stored; hence it is also known as the marrow cavity Has walls composed of spongy bone (cancellous bone) and is lined by endosteum, which are osteoprogenitor cells (Wikipedia: Periosteum [Accessed 5 June 2018])

Aug 3, 2021 · Typically a solitary lesion (Nielson: Diagnostic Pathology - Bone, 2nd Edition, 2017, Surg Pathol Clin 2012;5:101) Tan-white Oval, round or polypoid Firm Well circumscribed and attached to the underlying bone Cut surface with dense compact bone or trabecular bone

Dec 14, 2021 · Aneurysmal bone cyst affects young adults and shows large blood filled spaces with intervening septae containing fibroblasts and giant cells. Central giant cell granuloma produces radiolucent lesions in children and young women and shows osteoclast-like giant cells near hemorrhagic areas, cellular vascular and fibrous stroma and new bone ...