Search results for "Hyaline"
showing 9 items of 29 documents
Castleman's disease presenting as fever of unknown origin: diagnostic value of fluorodeoxyglucose-positron emission tomography/computed tomography.
2009
Abstract: Castleman's disease is an uncommon lymphoproliferative disorder that can present in both nodal and extranodal sites. The cause is unknown, but a disordered immunoregulation, which results in the excessive proliferation of B lymphocytes and plasma cells in lymphoid organs, plays a central role in the development of the condition. Three distinct histologic types (hyaline vascular, plasma cell, and mixed), and 2 anatomical variants (localized and multicentric) have been described. Clinical presentation generally consists of enlargement of lymph nodes or other tissues, fever, asthenia, weight loss, and other general symptoms, associated with nonspecific blood analysis abnormalities, s…
Hyaline globules and papillary fragments in cytologic smears from two intra-abdominal tumors (ovarian and hepatic) in female patients: A diagnostic p…
2016
Hyaline globules and papillary fragments in cytologic samples from two intra-abdominal tumors in young females are presented including the cytological features and the correlation with the histopathologic and immunohistochemical findings. In the first case a cytologic study from an ovarian mass showed papillary structures and isolated tumor cells with epithelioid morphology, irregular reniform-like nuclear contour, pale or vacuolated cytoplasm, abundant hyaline globules and occasional glomeruloid structures resembling Schiller-Duval bodies. Yolk sac tumor (YST) was the diagnosis on the histological slides. Tumor cells showed positivity for cytokeratin (AE1/AE3), epithelial membrane antigen …
Hyaline fibromatosis syndrome (juvenile hyaline fibromatosis): whole-body MR findings in two siblings with different subcutaneous nodules distributio…
2017
Abstract: Hyaline fibromatosis syndrome (juvenile hyaline fibromatosis) is a rare, progressive, autosomal recessive disorder whose main hallmark is the deposition of amorphous hyaline material in soft tissues, with an evolutionary course and health impairment. It may present involvement of subcutaneous or periskeletal soft tissue, or may develop as a visceral infiltration entity with poor prognosis. Very few radiological data about this inherited condition have been reported, due to the extreme rarity of disease. We herein present a case of two siblings, affected by different severity of the disease, with different clinical features. They were examined by whole-body MR (WBMR) in order to as…
Granular nuclear inclusion body disease: Fine structure of tibial muscle and sural nerve
1985
Fine granular (hyaline) intranuclear inclusion bodies were found in perivascular cells of a muscle and a sural nerve biopsy from a 32-year-old woman with slowly progressive motor disturbances. The hyaline nuclear inclusion bodies could be distinguished from other intranuclear hyaline inclusions by their granularity, the size of the granules (approximately 5-15 nm), and the positive iron staining reaction. They were not seen in muscle fibers or Schwann cells. Because of these apparently pathognomonic structural features the patient appears to present a condition that has not been described before.
Idiopathic Acquired Leukonychia in a 34-Year-Old Patient
2009
We present a rare case of a 34-year-old patient with persistent, progressive, acquired leukonychia totalis and partialis. Idiopathic acquired leukonychia is a rare chromatic disorder of the nail not associated with other abnormalities and discernible etiology. Our case report did not link the inheritance of leukonychia with diverse clinical syndromes. To our knowledge, only five cases of idiopathic, acquired, true total leukonychia were found in literature. This case was the sixth patient with asymptomatic idiopathic, white fingernails, and toenails without a hereditary cause.
Primo ricerche sulla ultrastruttura dell'uovo delle Ascidie
1959
Summary The cytoplasmic constituents of the unfertilized eggs of Ciona intestinalis were separated by centrifugation and studied at the electron microscope, with the following results. Lipid droplets collect at the centripetal pole; they are boundered by a thin membrane. The yolk granules are homogeneous in appearance; a few have a granular structure. Mitochondria contain numerous cristae; they accumulate in two different layers centripetally and centrifugally to the yolk granules layer respectively. Basophilic material collects at both poles of the egg in two hyaline caps: a centripetal one constituted by small Vesicles and a centrifugal represented by dense clumps. The latter, as well as …
Cartilage Regeneration and Tissue Engineering
2019
Abstract Articular cartilage in synovial joints is a hyaline cartilage highly hydrated with a rigorous order of cells and fibers and a specific content of proteoglycans and glycoproteins. It provides a low-friction surface, participates in the lubrication of the synovial joints, and distributes the forces to the underlying bone. It is an avascular and aneural tissue where small metabolites diffuse to and from cells. Unlike hyaline cartilage in other locations, articular cartilage lacks perichondrium, a layer of fibrous tissue around it that serves as the source of new cartilage cells. Thus, although extracellular matrix undergoes continuous remodeling throughout life, the ability to repair …
Indirekte MR-Arthrographie zur Verlaufskontrolle nach autologer osteochondraler Transplantation
2003
Purpose: To evaluate the spectrum of findings in indirect MR-arthrography following autologous osteochondral transplantation. Patients and Methods: 10 patients with autogenous osteochondral homografts underwent indirect MR-arthrography at three, 6 and 12 months postoperatively. The MR protocol at 1.5 T comprised unenhanced imagings with PD- and T 2 -weighted TSE-sequences with and without fat-suppression as well as T 1 -weighted fat-suppressed SE-sequences before and after iv. contrast ad ministration and after active joint exercise. Image analysis was done by two radiologists in conference and comprised the evaluation of signal intensity (Sl) and integrity of the osseous plug and the carti…
Repair of osteochondral defects in articular weightbearing areas in the rabbit's knee. The use of autologous osteochondral and meniscal grafts.
1987
Repair of osteochondral defects in articular weightbearing areas presents its own particular problems because of the low potential of hyaline cartilage for regeneration. Our first group of experiments on the knee of the rabbit confirms that the new regenerated cartilage comes from bone marrow which degenerates before developing into true hyaline cartilage. The second group of experiments shows that autologous grafts from the non-weightbearing articular area suitable for the repair of defects in weightbearing areas. In an third group, autologous meniscal fibrocartilage was used as a graft for the repair of osteochondral defects.