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Biomedical subjects

L Pacheco Ojeda

Publications and source records attributed to L Pacheco Ojeda.

2 recordsLinked to original sources
PubMed1999

[Thyroglossal duct cysts].

INTRODUCTION: A thyroglossal cyst (TGC) is an unusual neck lesion that is occassionally diagnosed in a general hospital that mostly attend adult patients. The aim of the current study was to analyze our experience in the management of these lesions. MATERIAL AND METHODS: The records of 43 patients operated on at the Social Security Hospital in Quito (Ecuador) from 1980 to 1998 for a thyroglossal duct cyst or fistula, were reviewed. RESULTS: Distribution was similar in both sexes. Mean age was 23. Thirty-five patients presented with a cystic lesion located in the midline or slightly laterally in the neck, closely related to the hyoid bone; the other 8 patients had a cutaneous fistula at the same place. All of the patients but one, underwent a radical Sistrunk procedure; complications were minor. In 5 patients (12%), a papillary thyroid carcinoma within the TGC was reported at the histologic study. No recurrence developed after a mean 23-month follow-up. CONCLUSIONS: A cyst or a fistula located at the level of the hyoid bone suggest a thyroglossal duct lesion. A papillary carcinoma can rarely occur within the TGC. A Sistrunk procedure is usually curative.

Adolescent↗
PubMed1990

Malignant tumours of the parotid: a study of 76 patients.

This study presents a series of malignant parotid tumours treated at the Institut Gustave-Roussy between 1975 and 1984. The lesions represented a wide variety of histological types. Few preoperative investigations were required, management being based on histology. Effective local control requires a total parotidectomy preserving the facial nerve where possible. It should be followed by routine radiotherapy which appears to reduce the incidence of local recurrence. The rate of local recurrence also depends on the histological type. It is seen more frequently in an adenocarcinoma following a pleomorphic adenoma than in simple adenocarcinoma. Patients with inoperable disease are treated with radiotherapy alone as chemotherapy has not so far been effective. Percentage 5-year survival for the three most common tumour types is as follows: adenocarcinoma: 49; adenoid cystic carcinoma: 83, and mucoepidermoid carcinoma: 75.

Adenocarcinoma↗