The search for molecular markers to improve diagnosis, individualize treatment and predict behavior of tumors has been the focus of several studies. This study aimed to analyze homeobox gene expression profile in oral squamous cell carcinoma (OSCC) as well as to investigate whether some of these genes are relevant molecular markers of prognosis and/or tumor aggressiveness. Homeobox gene expression levels were assessed by microarrays and qRT-PCR in OSCC tissues and adjacent non-cancerous matched tissues (margin), as well as in OSCC cell lines. Analysis of microarray data revealed the expression of 147 homeobox genes, including one set of six at least 2-fold up-regulated, and another set of 34 at least 2-fold down-regulated homeobox genes in OSCC. After qRT-PCR assays, the three most up-regulated homeobox genes (HOXA5, HOXD10 and HOXD11) revealed higher and statistically significant expression levels in OSCC samples when compared to margins. Patients presenting lower expression of HOXA5 had poorer prognosis compared to those with higher expression (P=0.03). Additionally, the status of HOXA5, HOXD10 and HOXD11 expression levels in OSCC cell lines also showed a significant up-regulation when compared to normal oral keratinocytes. Results confirm the presence of three significantly upregulated (>4-fold) homeobox genes (HOXA5, HOXD10 and HOXD11) in OSCC that may play a significant role in the pathogenesis of these tumors. Moreover, since lower levels of HOXA5 predict poor prognosis, this gene may be a novel candidate for development of therapeutic strategies in OSCC.

Objective. To evaluate site of regional recurrence in patients with squamous cell carcinoma of upper aerodigestive tract after neck dissection and the results of salvage treatment. Methods. 95 patients with regional recurrence as the first manifestation of relapse were selected between 943 patients who underwent neck dissection. We evaluated level and side of recurrence, as well disease control after salvage treatment. Results. Level II was the most frequent site of recurrence. Salvage treatment was performed in 51% of ipsilateral and in 75% of contralateral (nondissected neck) recurrences. Control of the disease 12 months after salvage surgery was 25% in the ipsilateral and 37% in contralateral recurrences. Conclusions. Cervical recurrences occur predominantly in level II. Relapse in level I is frequent only in oral cavity tumors and relapse in level V is rare. The neck recurrence carries a poor prognosis even among patients who underwent retreatment with curative intent.

OBJETIVO: Relatar as características clínicas, tratamento e complicações.dos tumores de Warthin. MÉTODOS: Estudo retrospectivo com 70 pacientes submetidos à ressecção de cistoadenoma papilífero linfomatoso,. Variáveis analisadas: idade, sexo, etnia, presença ou não de tabagismo, sítio primário do tumor, tamanho do tumor em centímetros, presença de bilateralidade, tipo de operação, multicentricidade, complicações do tratamento, presença de recidiva no seguimento e tempo de seguimento.. RESULTADOS: Quarenta e quatro pacientes (62,8%) eram do sexo masculino e 26 (37,2%), do sexo feminino, com média etária de 56,7 anos, O tabagismo estava presente em 55 (78,6%) pacientes, (94,3%) dos tumores eram unilaterais e quatro (5,7%) bilaterais, com tamanho médio de 4,1cm ao exame físico. As complicações foram 14 (19%) casos de paresia e/ou paralisia facial, seroma em 10 (13,8%), síndrome de Frey em três (4%), hematoma em dois (2,7%) e infecção de ferida operatória em um (1,5%) caso. CONCLUSÃO: O tumor de Warthin tem maior incidência no sexo masculino, em tabagistas e localização unilateral predominante na glândula parótida. A parotidectomia superficial com preservação do nervo facial mostrou-se eficaz em 100% casos. As complicações encontradas foram paresias ou paralisias transitórias, seroma, síndrome de Frey, hematoma e infecção de ferida operatória.

Laryngeal squamous cell carcinoma is very often diagnosed at advanced stages. The time interval between the specialist consultation and the start of treatment may contribute to better outcomes.Aim: the interval assessment between the first specialist evaluation and the treatment of patients with laryngeal squamous cell carcinoma.Study Design: longitudinal historical cohort. Result: the median time between first evaluation and treatment was 49 days. There was no relationship with gender, age, birth place, disease stage or education.Conclusion: the treatment median delay was 49 days, similar to what has been reported in other studies. Braz J Otorhinolaryngol. 2010;76(6):700-3. ORIGINAL ARTICLE BJORL

Uni lateral or bilateral neck dissection must be considered in the treatment of laryngeal cancer Aim: To evaluate the prevalence of contralateral metastases in larynx cancer and distribution of these metastases according to lymph node levels in the neck. Method:Retrospective longitudinal study of 272 charts from patients with squamous cell cancer of the larynx treated between 1996 and 2004; and we selected 104 surgical cases submitted to neck dissection. We evaluated the incidence of bilateral or contralateral metastases, according to the location and extension of the primary tumor, considering the anatomical sub-sites and the midline.Results: Contralateral metastases in lateral tumors were observed in 3.5% of glottic lesions and in 26% of supraglottic lesions. Contralateral metastases were uncommon in N0 patients. Lymph nodes levels IIa and III were the most commonly involved in the neck. Conclusion:In lateral glottic tumors there is no need for elective contralateral neck dissection. In supraglottic lesions without ipsilateral metastases, the incidence of hidden metastasis does not justify elective contralateral dissection. The midline is not a reliable indicator of the risk of contralateral laryngeal tumors. Braz J Otorhinolaryngol. 2012;78(2):7-10. ORIGINAL ARTICLE BJORL

Objective To evaluate the effect of time between surgery and postoperative radiation therapy on local recurrence of squamous cell carcinoma of the tongue and floor of the mouth.Methods A total of 154 patients treated between 1996 and 2007 were selected considering local recurrence rate and time of the adjuvant radiotherapy.Results Local recurrence was diagnosed in 54 (35%) patients. Radiation therapy reduced the rate of local recurrences, although with no statistical significance. The time between surgery and initiation of postoperative radiotherapy did not significantly influence the risk of local recurrence in patients referred to adjuvant treatment (p=0.49).Conclusion In the presence of risk factors for local recurrence, a short delay in starting the adjuvant radiation therapy does not contraindicate its performance.

The initial manifestation of squamous cell carcinoma of the hypopharynx happens in advanced stages (III and IV), with superior five-year disease-free survival in clinical stage III.

The nasopharyngeal carcinoma (NPC) is a rare cancer with a high incidence in Southern Asia. Aim: to study the demographic, clinical, therapeutic, and prognostic factors of nasopharyngeal undifferentiated carcinoma in a reference service. Materials and methods: A retrospective study was made of 46 patients from January 1998 to August 2000. The patients had no previous treatment and did not present any evidence of synchronous tumors or distance metastases. Results: The age ranged from 14 to 78 years (mean = 46 years); 35 (76%) patients were male. All patients were Caucasian or African-Brazilian. The onset of initial symptoms ranged from 1 to 48 months (mean = 7 months); 47% of the subjects smoked tobacco and 33% consumed alcoholic beverages. A lump in the neck was the most frequent symptom (34 patients). Twenty-two patients were clinically staged as T1/T2 and 24 patients as T3/T4; 24 patients were classified as N2, and 16 patients were staged as N3. Curative treatment consisted of radiotherapy and simultaneous chemotherapy in clinical stages III and IV. Of 27 patients that were monitored, 52% were alive with no evidence of disease after three years. Conclusion: All patients were in advanced clinical stages of the disease. The three-year disease-free survival rate was 52%.