Biomedical subjects

R Barona

Publications and source records attributed to R Barona.

43 records · Page 3Linked to original sources

PubMedDate not supplied

[The new technique of studying cranial nerves VII, XI and XII: electroneurography by transcranial magnetic stimulation].

Transcranial magnetic stimulation (TMS) technique has been applied to the study of VII, XI and XII cranial nerves in 5 normal subjects, comparing the results with those obtained by conventional electrical stimulation. This technique allows us to study in a painless way the nerve function in all its pathway (motor cortex-motoneurone-muscle). In some cases, TMS yields potentials of a greater amplitude than those obtained by electrical stimulation, due to its capacity to penetrate deeply and stimulate all the fibers of the nerve.

Cranial Nerves↗

PubMedDate not supplied

[Verifiable diagnosis of the puncture of the fine needle aspiration in head and neck neoplasms].

We have studied 103 fine needle aspiration (FNA) biopsies as diagnostic technique on patients with head and neck tumours: 55 FNA on thyroid gland, 35 in cervical lymph nodes and 13 on salivary glands. The results obtained by PAAF were coincident in 90.8% of the cases with histology and clinical evolution of the patient. Specificity was of 98%, sensibility to detect the tumour presence 84%, with a positive predictive value of 95%. No complications were found in any of the patients. We conclude that PAAF is an excellent first line method for diagnostic investigation of palpable masses in head and neck, and allows us to reduced the number of surgical manoeuvres.

Biopsy, Needle↗

PubMedDate not supplied

[Fine-needle puncture-aspiration in the measurement of the DNA content by flow cytometry in head and neck tumors. Methodology and applications].

Fine needle aspiration was used to obtain samples from 15 patients with head and neck tumors for posterior analysis of their DNA content by flow cytometry. This technique afforded rapid and readily reproducible high quality histograms. A review was made of the malignancy criteria according to variations in DNA content. Good patient tolerance made it possible to apply the technique repeatedly to obtain samples for DNA analysis by flow cytometry, a method of great interest in monitoring response to different treatment protocols (chemotherapy, radiotherapy).

Biopsy, Needle↗

PubMedDate not supplied

[Study of the vestibulospinal reflex. Clinical applications of posturography].

The vestibulo-spinal reflex is of great importance in maintaining balance--hence the interest in evaluating it objectively in patients suffering from vertigo. A review is made of the objective exploratory methods currently available, i.e., static posturography, stimulation posturography, dynamic posturography and craneocorpography. The clinical applications of posturographyare discussed, fundamentally as applied to the diagnosis of central vestibular pathology, treatment planning and evolutive monitoriacion of the patient with vertigo.

Humans↗

PubMedDate not supplied

[Computerized tomography in the detection of metastatic cervical lymph nodes].

The accuracy of computed tomography (CT) in detecting cervical lymph node metastases was studied. Twenty patients with squamous carcinoma of the head and neck were selected. The results obtained by cervical palpation, CT and postoperative histological study were compared. Palpation had a sensitivity of 64% and specificity of 100%. CT had a sensitivity of 71% and specificity of 100%. The small gain in sensitivity does not justify the systematic use of CT to study cervical lymph nodes in head and neck squamous carcinoma.

Carcinoma, Squamous Cell↗

PubMedDate not supplied

[Painful shoulder syndrome with drooping after cervical lymphatic dissection].

A study was made of 12 patients with head and neck cancer who underwent surgical neck dissection in 1993 to evaluate quantitatively the degree of postoperative shoulder dysfunction after surgical neck dissection. Nerve conduction studies were made of the accessory nerve and the range of motion, strength and position of the shoulder were evaluated. Patients were invited to complete a questionnaire about daily living activities, shoulder pain, shoulder movement and shoulder droop. Our results showed that abnormalities can be found in shoulder and arm function after any type of neck dissection and that these are evident when the accessory nerve is damaged. Subjective questionnaire findings generally coincided with objective postoperative dysfunction.

Aged↗

PubMedDate not supplied

[Acinar cell carcinoma of submaxillary gland].

Although acine cell neoplasms have for a long time been regarded as benign tumors, they are presently considered to represent the carcinomas. These rare tumors mainly affect the parotid glands, and only exceptionally involve other salivary glands. Clinically, acic cell carcinoma present as isolated tumors simulating a pleomorphic adenoma. The diagnosis is histopathological, and complete surgical removal of the tumor is the treatment of choice, with cervical lymphatic voiding and/or postoperative radiotherapy in selected cases. A prolonged patient follow-up is required, for the tumor may recur many years after surgery. We report a case of acinic cell carcinoma in submaxillary gland.

Adult↗