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Browsing HB - ORL - Artigos by Author "Pereira, G"

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  • Positron emission tomography in the detection of occult primary head and neck carcinoma: a retrospective study
    Publication . Pereira, G; Silva, JC; Monteiro, E
    BACKGROUND: The management of cervical lymph node metastases from an unknown primary tumor remains a controversial subject. Recently, Positron Emission Tomography (PET) has proved useful in the detection of these tumors, even after an unsuccessful conventional diagnostic workup. This study was performed to assess the role of PET in the detection of occult primary head and neck carcinomas. METHODS: A retrospective analysis of a four year period at a tertiary referral oncology hospital was conducted. RESULTS: Of the 49 patients with cervical metastases of carcinoma from an unknown primary, PET detected a primary in 9 patients and gave 5 false positive and 4 false negative results. Detection rate, sensitivity, specificity and accuracy were of 18.4%, 69.2%, 86.1% and 81.6%, respectively. PET was also of substantial benefit in detecting distant metastatic disease and, thus, altered therapeutic strategies in a significant amount of patients. CONCLUSIONS: Therefore, PET is a valuable tool in the management of patients with occult primary head and neck carcinoma, not only because it provides additional information as to the location of primary tumors, but also due to the fact that it can detect unexpected distant metastases
    2012Journal article Open access Show more
  • The management of ingested foreign bodies in an Ear Nose and Throat emergency unit: Prospective study of 204 cases
    Publication . Marçal, N; Soares, JB; Pereira, G; Guimarães, J; Godinho, T
    AIMS: To determine how often ingested foreign bodies are found and what parameters may predict their retrieval. METHODS: During 1 year, we prospectively studied all patients referred to our Ear Nose and Throat Emergency Unit because of foreign body ingestion. RESULTS: During the study, 204 (median age-42 years [10 months-84 years]) patients were admitted because of ingested foreign body. The most common was fish bone (88%). Most patients were admitted <24-hour after ingestion (72%) and complained of symptoms above the cricoid cartilage (79%). A foreign body was removed by Ear Nose and Throat team in 108 (53%) patients. Twenty-three (11%) patients were referred to Gastroenterology. In 9 (39%) of these patients, a foreign body was identified by esophagogastroscopy, always from the esophagus. Predictive variables for retrieval of foreign body by Ear Nose and Throat team were ingested fish bone (P=.000; odds ratio [OR]=17.3), short duration (<6hours) of symptoms (P=.001; OR=2.3) and symptoms above or at the level of cricoid cartilage (P=.000; OR=8.9). In patients with symptoms below the cricoid cartilage the rate of retrieval of foreign body by Ear Nose and Throat team (11%) was significantly increased by Gastroenterology (41%; P=.03). CONCLUSIONS: Patients with ingestion of foreign body who ingest fish bone, present within the first 6hours or complain of symptoms at or above cricoid cartilage deserve greater investment in terms of time and resources for retrieval of ingested foreign body by Ear Nose and Throat team.
    2013Journal article Open access Show more