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  • 1
    Electronic Resource
    Electronic Resource
    Follicular lymphoid hyperplasia of the hard palate and oral mucosa: report of three cases and a review of the literature (2001)
    Oxford UK : Blackwell Science Ltd
    Histopathology 39 (2001), S. 0 
    Details
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Follicular lymphoid hyperplasia of the hard palate and oral mucosa: report of three cases and a review of the literature Aims: To bring to wider attention this uncommon, poorly understood entity which may closely resemble, clinically and morphologically, follicular lymphoma. Methods and results: We report three cases of follicular lymphoid hyperplasia of the hard palate and oral mucosa which caused diagnostic difficulties for the referring pathologists. The clinicopathological features are described and integrated into a review of the 16 previously recorded cases. The condition most commonly presents as a slowly growing mass situated in the posterior hard palate but may present with multicentric oral lesions and lymphadenopathy. Morphologically, it is characterized by a dense follicular lymphoid infiltrate within the lamina propria which may show the classical features of benign reactive hyperplasia, but not uncommonly, indistinct germinal centres, ill-defined mantles and a lack of tingible-body macrophages are features which may lead to an erroneous diagnosis of follicular lymphoma. Conclusions: Follicular lymphoid hyperplasia of the palate is a poorly recognized entity which is frequently confused with follicular lymphoma. Awareness of the entity combined with the use of immunohistochemistry for immunoglobulin light chains and bcl-2 protein allows a correct diagnosis to be made avoiding extensive investigation and aggressive treatment to the patient.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2559.2001.01210.x
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  • 2
    Electronic Resource
    Electronic Resource
    A study of four cases of extra-orbital giant cell angiofibroma with documentation of some unusual features (2001)
    Oxford UK : Blackwell Science Ltd
    Histopathology 39 (2001), S. 0 
    Details
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: A study of four cases of extra-orbital giant cell angiofibroma with documentation of some unusual features Aims: To document the clinical, light microscopic, immunohistochemical and ultrastructural features of four cases of extra-orbital giant cell angiofibromas. Methods and results: Sections of formalin-fixed paraffin-embedded specimens were studied by haematoxylin and eosin, reticulin and immunohistochemical stains. Electron microscopy was carried out in two cases on tissue fixed in formalin. The age of the patients ranged from 30 to 41 years. Two patients presented with a soft tissue swelling in the left groin, one patient had a left axillary soft tissue lump and one patient presented with a parotid lump. All lesions were well circumscribed and contained variably cellular and vascularized tissue composed of round to spindle cells with a patternless arrangement, scattered multinucleate giant cells and pseudovascular spaces conforming to the description of giant cell angiofibroma. Mononuclear and multinucleate tumour cells were both positive for vimentin and CD34; one tumour exhibited focal S100 protein and GFAP positivity. Both of the tumours examined by electron microscopy showed fibroblastic features, but in addition one contained cells having Schwannian features. All four patients were well without recurrent disease on follow-up (average 25 months). Conclusion: Giant cell angiofibroma shares many features with solitary fibrous tumour and giant cell fibroblastoma and shows a wider distribution than initially recognized. Rarely, Schwannian differentiation may be observed in these tumours.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2559.2001.01227.x
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  • 3
    Electronic Resource
    Electronic Resource
    Morphological variants of plasma cell tumours (2004)
    Oxford, UK : Blackwell Science Ltd
    Histopathology 44 (2004), S. 0 
    Details
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Banerjee S S, Verma S & Shanks J H 
(2004) Histopathology44, 2–8 
Morphological variants of plasma cell tumours
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2559.2004.01763.x
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  • 4
    Electronic Resource
    Electronic Resource
    Effects of buffered media upon growth and alkaloid production of Catharanthus roseus hairy roots (2000)
    Springer
    Applied microbiology and biotechnology 53 (2000), S. 262-265 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract The influence of buffered media upon the growth and alkaloid productivity of Catharanthus roseus hairy root culture was examined. As expected, the buffers minimized shifts in the pH of the media and had slightly negative effects upon growth. The growth of the hairy roots remained optimal in unbuffered media. The specific yield of lochnericine was significantly lower in response to the addition of buffers, while tabersonine was significantly higher. In contrast, the specific yields of ajmalicine, serpentine, and hörhammericine remained unchanged.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002530050018
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Measurement of Acoustic Transients During Pulsed Holmium:YAG Laser Ablation of Cadaveric Human Temporal Bone (2000)
    Springer
    Lasers in medical science 15 (2000), S. 2-5 
    Details
    ISSN: 1435-604X
    Keywords: Keywords:Ear; Holmium:YAG laser; Laser tissue effects; Photoacoustic injury; Stapedotomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Physics , Technology
    Notes: Abstract. Pulsed infrared (IR) and ultraviolet (UV) lasers have been suggested for use in middle ear surgery due to potential fiberoptic delivery, decreased thermal trauma and precise ablation characteristics. Although attention has been focused on the thermal and photoacoustic events that occur during pulsed laser ablation of hard tissue, there are few studies which evaluate the acoustic energy generated from these devices from an audiological standpoint. In this study, the mastoid cavities of cadaveric human temporal bones were irradiated with a holmium: yttrium aluminium garnet (Ho:YAG) laser (λ=2.12 µm) using the following parameters: 5, 10, and 15 Hz pulse repetition rate and 1, 2, 4, 6, 8, and 10 W average power. During ablation, acoustic measurements were made using a sound level meter positioned 5 cm away from the target site. With each set of laser parameters, the sound intensity exceeded 85 dB (dBA scale). Peak intensities of 125 dB were measured, and a saturation effect noted above 4 W or 500 mJ/pulse. The clinical significance of these findings is discussed and the acoustical aspects of middle ear function and noise trauma are reviewed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s101030050040
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    Paper (German National Licenses)
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