Pathological Conditions affecting the Maxillary Sinus

2007 ◽  
pp. 119-131
Keyword(s):  
Maxillary Sinus ◽  
Pathological Conditions

Modifications of the Caldwell-Luc procedure for the prevention of post-operative sensitivity disorders

1996 ◽  
Vol 110 (3) ◽  
pp. 228-231 ◽  
Author(s):  
E. Ferekidis ◽  
P. Tzounakos ◽  
D. Kandiloros ◽  
A. Kaberos ◽  
G. Adamopoulos
Keyword(s):  
Comparative Study ◽  
Maxillary Sinus ◽  
Standard Procedure ◽  
Modified Technique ◽  
Sinus Disease ◽  
Pathological Conditions ◽  
Classical Technique ◽  
Prospective Comparative Study ◽  
Department Faculty ◽  
Maxillary Sinuses

AbstractThe effectiveness of some modifications of the Caldwell-Luc standard procedure in the prevention of postoperative mid-facial sensitivity disorders was investigated in a prospective comparative study at the ENT Department, Faculty of Medicine, University of Athens, Greece, from 1986–1992. Sixty-nine maxillary sinuses were operated on in 61 patients suffering from benign pathological conditions. The modifications concerned the type of mucoperiosteal incision and the site and size of the created anterior antrostomy. Only 8.7 per cent of the sinuses operated on by the modified technique presented with post-operative disorders whereas among those operated on by the classical technique, the ratio climbed to 33 per cent. In view of the findings of this study, the modifications applied can be valuable in treating non-extensive maxillary sinus disease with minimal post-operative sensitivity disorders.

Pathological conditions involving the maxillary sinus: their appearance on panoramic dental radiographs

1979 ◽  
Vol 17 (1) ◽  
pp. 27-32 ◽  
Author(s):  
Christoffel J. Norta ◽  
Allan G. Farman ◽  
Japie J. De V. Joubert
Keyword(s):  
Maxillary Sinus ◽  
Pathological Conditions ◽  
Dental Radiographs

Morphological and elemental analysis of isolated incubated frog retina-choroid

1984 ◽  
Vol 42 ◽  
pp. 298-299
Author(s):  
B. J. Panessa-Warren ◽  
J. B. Warren ◽  
H. W. Kraner
Keyword(s):  
Elemental Analysis ◽  
Pigment Epithelium ◽  
Human Retina ◽  
Healthy Individuals ◽  
Anterior Portion ◽  
Pathological Conditions ◽  
Frog Retina ◽  
Isolated Retina ◽  
Vertebrate Eye ◽  
Retina Pigment Epithelium

Our previous studies have demonstrated that abnormally high amounts of calcium (Ca) and zinc (Zn) can be accumulated in human retina-choroid under pathological conditions and that barium (Ba), which was not detected in the eyes of healthy individuals, is deposited in the retina pigment epithelium (RPE), and to a lesser extent in the sensory retina and iris. In an attempt to understand how these cations can be accumulated in the vertebrate eye, a morphological and microanalytical study of the uptake and loss of specific cations (K, Ca,Ba,Zn) was undertaken with incubated Rana catesbiana isolated retina and RPE preparations. Large frogs (650-800 gms) were dark adapted, guillotined and their eyes enucleated in deep ruby light. The eyes were hemisected behind the ora serrata and the anterior portion of the eye removed. The eyecup was bisected along the plane of the optic disc and the two segments of retina peeled away from the RPE and incubated.

An Ultrastructural Study of the Proliferation Patterns of the Reserve Cells of the Human Cervix Uteri

1972 ◽  
Vol 30 ◽  
pp. 80-81
Author(s):  
Takanori Sohda ◽  
Hiroshi Saito ◽  
Goro Asano ◽  
Katsunari Fukushi ◽  
Katsuya Suzuki ◽  
...  
Keyword(s):  
Ultrastructural Study ◽  
Age Groups ◽  
Point Of View ◽  
University Hospital ◽  
Cervix Uteri ◽  
Morphological Aspect ◽  
Functional Aspect ◽  
Pathological Conditions ◽  
Human Cervix ◽  
Morphological Patterns

Recently, the functional aspect as well as morphological aspect of the reserve cells in the cervix uteri drew much attention in view of the carcinogenesis in squamocolumunar junction. In this communication, the authors elucidate the ultrastructural features of the reserve cells in patients of various age groups visiting our university hospital and affiliated hospital.From conventional light microscopic point of view, the reserve cells tend to be pronounced in various pathological conditions, such as the persisting inflammation, proliferative disorders and irritation of hormones. The morphological patterns of the reserve cells from various stage and degree of irritation were observed.

Surface Ultrastructure of Human Ectocervix in Certain Pathological Conditions

1985 ◽  
Vol 43 ◽  
pp. 570-571
Author(s):  
S. Mukherjee ◽  
T. Guha ◽  
B. Chakrabarti ◽  
P. Chakrabarti
Keyword(s):  
Epithelial Cells ◽  
Marked Reduction ◽  
Squamous Epithelium ◽  
Malignant Tumour ◽  
Surface Ultrastructure ◽  
Normal Tissues ◽  
Pathological Conditions ◽  
Hexagonal Shape ◽  
Columnar Cells ◽  
Scanning Electron

The cervix is an important organ in reproduction. Its malfunction is frequently a factor for infertility. Ectocervix region does not appear to have received much attention although many studies have been reported on the endocervix. We report here our SEM observations on ectocervix in certain pathological conditions compared to normal ectocervix.Ectocervix specimens from human females with specific pathological disorders were processed for Scanning Electron Microscopy by conventional method and they were examined in a Philips SEM.The normal ectocervix is lined by flat layer of squamous epithelial cells with microridges (Fig. 1). These cells are known to be formed from columnar cells through metaplastic transformation. The cells of carcinoma-bearing ectocervix show a disorganised appearance (Fig. 2). In non-malignant tumour surface some cuboidal and few columnar cells were seen (Fig. 3). A cyst appears like an overgrowth on the surface of the squamous epithelium (Fig. 4). In ulcerated ectocervix a marked reduction of epithelial cells are observed (Fig. 5); the cells are devoid of microridges and, the large polygonal cells, as observed in normal tissues, have somehow acquired comparatively small hexagonal shape

Dental Anatomy and Radiology and the Maxillary Sinus

1976 ◽  
Vol 9 (1) ◽  
pp. 83-91
Author(s):  
Sidney M. Fireman ◽  
Arnold M. Noyek
Keyword(s):  
Maxillary Sinus ◽  
Dental Anatomy

Transnasal Endoscopic Medial Maxillary Sinus Wall Transposition with Preservation of the Inferior Turbinate and Nasolacrimal Duct

2015 ◽  
Vol 76 (S 01) ◽  
Author(s):  
Alice Zhao ◽  
Kristina Piastro ◽  
Anna Butrymowicz ◽  
Tiffany Chen ◽  
Tyler Kenning ◽  
...  
Keyword(s):  
Maxillary Sinus ◽  
Inferior Turbinate ◽  
Nasolacrimal Duct ◽  
Sinus Wall

Non-Linear Dynamics of Cardiovascular Variability Signals

1994 ◽  
Vol 33 (01) ◽  
pp. 81-84 ◽  
Author(s):  
S. Cerutti ◽  
S. Guzzetti ◽  
R. Parola ◽  
M.G. Signorini
Keyword(s):  
Dimensional Space ◽  
Severe Heart Failure ◽  
Parametric Models ◽  
Deterministic Systems ◽  
Finite Dimensional ◽  
Return Maps ◽  
Pathological Conditions ◽  
Non Linear ◽  
Space State

Abstract:Long-term regulation of beat-to-beat variability involves several different kinds of controls. A linear approach performed by parametric models enhances the short-term regulation of the autonomic nervous system. Some non-linear long-term regulation can be assessed by the chaotic deterministic approach applied to the beat-to-beat variability of the discrete RR-interval series, extracted from the ECG. For chaotic deterministic systems, trajectories of the state vector describe a strange attractor characterized by a fractal of dimension D. Signals are supposed to be generated by a deterministic and finite dimensional but non-linear dynamic system with trajectories in a multi-dimensional space-state. We estimated the fractal dimension through the Grassberger and Procaccia algorithm and Self-Similarity approaches of the 24-h heart-rate variability (HRV) signal in different physiological and pathological conditions such as severe heart failure, or after heart transplantation. State-space representations through Return Maps are also obtained. Differences between physiological and pathological cases have been assessed and generally a decrease in the system complexity is correlated to pathological conditions.

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