RESUMEN
BACKGROUND: Fine-needle aspiration cytology (FNAC) is used to diagnose masses presenting in the head and neck region. No systematic review of FNAC in this group has yet been performed. METHODS: A systematic review of the published literature and meta-analysis of data extracted from the included studies were compared with a 10-year review of head and neck FNAC from our institution. RESULTS: Systematic review identified 30 studies; 3459 FNAC aspirates from all head and neck sites were included. Overall results were as follows: sensitivity, specificity, accuracy, positive predictive value (PPV), and negative predictive value (NPV) were 89.6%, 96.5%, 93.1%, 96.2%, and 90.3%, respectively. Two thousand seven hundred two head and neck aspirates were included in our institutional review. Sensitivity, specificity, PPV, NPV, and accuracy were 89.5%, 98.5%, 97.3%, 94.0%, and 95.1%, respectively. CONCLUSION: Meta-analysis and comparative systematic review confirm that FNAC is highly effective in the diagnosis of head and neck masses, with some limitations.
Asunto(s)
Biopsia con Aguja Fina/métodos , Neoplasias de Cabeza y Cuello/mortalidad , Neoplasias de Cabeza y Cuello/patología , Invasividad Neoplásica/patología , Recurrencia Local de Neoplasia/patología , Terapia Combinada , Femenino , Neoplasias de Cabeza y Cuello/terapia , Humanos , Inmunohistoquímica , Masculino , Recurrencia Local de Neoplasia/mortalidad , Estadificación de Neoplasias , Pronóstico , Medición de Riesgo , Sensibilidad y Especificidad , Análisis de SupervivenciaRESUMEN
Prostaglandins and leukotrienes are implicated in conditions of both the upper and lower airways. In the former they are deranged in nasal polyposis, intrinsic rhinitis and allergic rhinitis while in the latter they are involved in the pathogenesis of asthma. The aim of the present study was to measure mucosal eicosanoid levels in the three types of rhinitis and compare with controls. In addition, the effect of topical steroids on eicosanoid levels in rhinitis was examined. The levels of prostaglandins E(2) (PGE(2)) and D(2) (PGD(2)) and of leukotrienes E(4) (LTE(4)) and B(4) (LTB(4)) were measured in nasal biopsies from the inferior turbinates of patients suffering from perennial rhinitis and a control group. Rhinitis patients were classified into three categories: perennial allergic rhinitis (PAR), non-allergic rhinitis with eosinophilia (NARES) and noneosinophilic non-allergic rhinitis (NENAR) on the basis of symptoms, secretion eosinophilia, nasal resistance and allergy testing. Patients with rhinitis were randomized into two groups. One received fluticasone propionate nasal spray (FPANS) and the other a placebo (PNS) over a period of six weeks prior to the biopsies. One hundred and one patients with PAR, NARES or NENAR were recruited sequentially and the control group consisted of 21 patients with no evidence of rhinitis but with nasal obstruction due to septal deviation. Untreated rhinitics had significantly lower levels of PGE(2), PGD(2) and LTE(4) than non-rhinitic controls. Six-weeks' treatment with FPANS significantly increased the levels of those eicosanoids in patients with PAR and NARES but they were still significantly below normal. Levels of LTB(4) in all three rhinitis groups were not significantly different from controls and treatment with topical steroids had no effect. Their findings are contrary to current thinking that increased levels of eicosanoids, in particular cysteinyl-leukotrienes, play an important role in the pathogenesis of chronic, non-infective upper airway inflammation.