Search

A hamartoma is a benign, focal malformation that resembles a neoplasm in the tissue of its origin. It is a rare finding in the head and neck area and usually occurs as an age-related tumour in the lung. Herein, we report a case of 52 years old male presented with hoarseness and non productive cough since 2 months. On flexible direct laryngoscopy a smooth, sessile, hyperaemic mass arising from the right vocal cord was seen. Under video-endoscopy, excision of the mass was done using radiofrequency probe and the mass revealed hamartoma on histopathology. Laryngeal hamartoma should be included in the differential diagnosis of benign laryngeal lesions. Complete surgical removal is the method of choice but should be limited in order to preserve laryngeal function, as the prognosis is excellent.

We report the case of a 71 years old lady with a history of hoarseness of voice due to aortic arch aneurysm, one of the causes of the cardiovocal syndrome

Inhalation of foreign body is a serious event. The numbers of foreign bodies that become impacted in the larynx are small and require urgent recognition. We describe the case of a 12 year old girl with an impacted open safety pin in the larynx. The sharp end of the safety pin was upward, below the level of the vocal cords and had pierced the soft tissue. Tracheostomy was required to secure the airway and the child had an uneventful recovery. We discuss the management and describe our method of removal of the foreign body with a brief review of literature.

Temporomandibular joint ankylosis involves fusion of the mandibular condyle to the base of the skull. It is a major clinical problem that affects many patients suffering from facial trauma, infection or systemic disease. The treatment of Temporomandibular joint ankylosis poses a significant challenge because of technical difficulties and a high incidence of recurrence. This report describe a rare case of a 16 year-man with complete inability to open his mouth, diagnosed with unilateral post septic left bony Temporomandibular joint ankylosis. The surgical approach consisted of gap arthroplasty followed by vigorous physiotherapy.

Although triethanolamine (TEA) is widely used as complexing agent in the preparation of nanocrystalline PbS thin film by chemical bath deposition method, not enough studies have been reported on how its concentration affects various properties of the films. In the present work, we studied the effect of concentration of TEA on structural, morphological, optical, photoluminescence and electrical conduction properties of the films. We observed that with the increase of molar concentration of TEA-the crystallinity deteriorates with reduced crystallite size and increased strain and dislocation density; the densities of the films have been reduced; the films become non stoichiometric; optically these become more transparent but less reflecting showing prominent blue shift in the optical band gap which increased with the concentration of TEA; the width of the localized states in the band gap has been increased. The refractive index and extinction coefficient of the films are observed to be wavelength dispersive. The refractive index decreases with the increase of TEA complexation. In the NIR region, the extinction coefficient also decreases as concentration of TEA increases. The real and imaginary parts of dielectric constant replicates the refractive index and extinction coefficient curves respectively against wavelength. The PL spectra reveal conduction band to valence band transition with reduced intensity at higher molarity of TEA. The current-voltage measurement shows that the conductivity decreases considerably with the increase of TEA concentration. Our measurement estimated the crystallite size in the range of 29-37.49 nm, strain ~10, dislocation density ~10 cm, band gap 0.8-1.55 eV, bandtail width 0.27-0.57 eV, the refractive index 2.3-5.8 and conductivity 0.0011-0.20 (Ωcm). [ABSTRACT FROM AUTHOR]

Objective : To accurately determine the volume of normal maxillary sinus in adults by using multidetector computed tomography aided with dedicated software and to assess the difference in volume between males and females. Method : Study was conducted in Department of Radiology, School of Medical Sciences and Research, Sharda University , Greater Noida. Normal maxillary sinuses in 69 males and 49 females were evaluated by multidetector CT (64 rows of detectors) using GE OPTIMA 660 scanner. Accurate assessment of volume was done by using the auto-contour software. The data was analysed for range and average sinus volume in males and females. The difference in sinus volume between males and females was tested for statistical significance using the Students t-test. Results : The range of maxillary sinus volume was 6.1 - 23 millilitres in males and 2.2 - 18 millilitres in females. The average sinus volume was 13.7 millilitres in males and 9.9 millilitres in females. The difference in average sinus volume was statistically significant ( p < 0.05). [ABSTRACT FROM AUTHOR]

A number of researchers have been synthesising thin films of PbS on glass substrates by reaction of 1 M CHNS with of 0.50 M Pb(CHCOO).3HO complexed by 1 M triethanolamine (TEA) at different deposition temperatures and reported various temperature dependent properties of the films. In our work, we followed the same recipe but reduced the concentration of Pb(CHCOO).3HO by 0.10 M. The pH of the bath was adjusted at 12. The deposition has been carried out at five different temperatures-30, 40, 50, 64 and 70 °C. We wish to study how structural, optical and electrical properties of the films prepared with reduced concentration of Pb(CHCOO).3HO change with temperature. We have observed that at 30 and 40 °C, no crystalline PbS phase was formed, only elemental S was detected. The PbS phase formation was noticed only from 50 °C. The elemental S has been subdued and the crystalline PbS phase formation has been enhanced with increase of temperature. The average crystallite sizes were determined from XRD by Debye-Scherrer formula, lattice constants from Nelson-Riley plot, band gaps by the derivative method and electrical conductivities from current-voltage characteristics. It has been found that with the increase of deposition temperature, the crystallite size increases, strain decreases, band gap reduces and conductivity improves. The average crystallite sizes were found 35.79, 42.51 and 42.67 nm at 50, 64 and 70 °C respectively. The band gaps for these three films were noted as 1.74, 1.67 and 1.66 eV respectively indicating blue-shift from the bulk value. The tail widths of localised states in the forbidden band were observed in the range of (0.70-0.76) eV. The strains in the films were ~10 and conductivities were ~10-10 (Ω cm). [ABSTRACT FROM AUTHOR]