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Biomedical subjects

M Giannoni

Publications and source records attributed to M Giannoni.

At least 19 recordsLinked to original sources
PubMed1992

[Echography in laryngeal tumors].

During sonographic (US) studies of the neck for the nodal staging of patients with laryngeal neoplasms, the authors observed that, especially in advanced cases, also the primary lesion could be imaged with this method. Therefore, US capabilities were investigated in assessing the local stage of laryngeal neoplasms; the results were compared with clinical and surgical findings. Fifty normal subjects of various ages were previously examined to assess the normal US anatomy of laryngeal structures. The presence of calcifications within the thyroid cartilage is the major obstacle to US imaging of the larynx and is directly related to age; indeed, only 40% of subjects can be examined at the age of 70. Seventeen patients with advanced laryngeal tumors were examined by US. Laryngeal imaging was possible, either in part or completely, in 16 of 17 cases. The results were in agreement with clinical staging in 14 cases; in 2 cases US proved clinical understaging by detecting lesion spread to anterolateral perilaryngeal structures. To conclude, US is not suggested as the method of choice in patients with laryngeal neoplasms. However, in subjects with advanced tumors, also US can image the lesion directly, and even detect tumor spread to surrounding tissues, especially in the anterior and lateral directions. In a few cases, this can contribute to preoperative staging and to select the correct therapeutic approach.

Adolescent↗
PubMed1992

[Artifacts in echo-Doppler and color-Doppler].

It is well known that artifacts can be observed during US examinations; the same is true also for Doppler and color-Doppler images of blood flow. Recognizing these artifacts is important to avoid image misinterpretations and, when possible, to overcome them by modifying either techniques or unit settings, or both. This work was aimed at presenting the several artifacts which can be observed during Doppler investigations, at classifying them, and trying to understand the physical and/or technical principles underlying their origin. Doppler and color-Doppler artifacts can be divided into four large groups: 1) artifacts regarding evaluation of the presence of flow; 2) artifacts regarding evaluation of the direction of flow; 3) artifacts regarding determination of the velocity of flow; 4) artifacts affecting spatial location, on the screen, of the examined vessel. Each of the above can cause severe diagnostic misinterpretations, if not correctly recognized and interpreted. It must be kept in mind that an accurate analysis of unit settings during scanning, and the meticulous evaluation of the obtained color images are of the utmost importance for the proper use of this valuable but difficult diagnostic technique.

Artifacts↗
PubMed1991

[Papilloma of the palate. Clinical and histopathology].

An asymptomatic, exophytic and unusually large mass of hard and soft palate is presented. Its papillary surface architecture is characteristic of an oral squamous papilloma. The cause is unknown. Recurrent or malignant change, or both, are possible.

Adolescent↗
PubMed1989

[Impacted canines. epidemiological evaluation].

The results are reported of an epidemiologic research carried out on 205 patients which presented bad occlusions. We found that 9.27% of the patients presented inclusions of canine teeth, that female subjects were more affected by the inclusion than male subjects, and that inclusions were more frequent at the level of the upper jaw.

Cuspid↗
PubMed1989

[Dental problems in Down's syndrome. Overview and specific pathology].

After describing the etiopathogenesis and the general clinical features which are present in the trisomy 21, the Authors describe the patterns of odontostomatologic pathology which often occurs in such patients. Attention has been focused on the fact that the odontostomatologist needs to be prepared for the particular therapeutical approach which is necessary for the treatment of such patients.

Dental Care for Persons with Disabilities↗
PubMed1989

[Odontomas. Description of a clinical case].

After mentioning the etiopathogenetic, clinical and therapeutic characteristics of odontoma, the Authors describe a case of composite odontoma, particularly interesting both for its location in parasymphysial site and for the presence of all the dental elements in the arch corresponding to the hemimandible where the neoplasm is located. Differential diagnosis has been discussed, wishing a wider use of routine x-ray examination, in order to obtain an early detection of this particular neoplasm, which often goes undiscovered for a long time, because of its slow growth.

Adult↗