New insights into human papillomavirus-associated head and neck squamous cell carcinoma.

Human papillomavirus (HPV)-associated head and neck squamous cell carcinoma (HNSCC) is an entity with peculiar clinical and molecular characteristics, which mainly arises from the reticulated epithelium lining the crypts of the palatine tonsils and the base of the tongue. The only head and neck site with a definite etiological association between persistent high-risk (HR) HPV infection and development of SCC is the oropharynx. HPV-positive malignancies represent 5-20% of all HNSCCs and 40-90% of those arising from the oropharynx, with widely variable rates depending on the geographic area, population, relative prevalence of environment-related SCC and detection assay. HPV-16 is by far the most common HR HPV genotype detected in oropharyngeal SCC (OPSCC), and the only definitely carcinogenic genotype for the head and neck region. Patients with HPV-induced OPSCC are more likely to be middle-aged white men, non-smokers, non-drinkers or mild to moderate drinkers, with higher socioeconomic status and better performance status than subjects with HPV-unrelated SCC. HPV-induced HNSCCs are often described as non-keratinizing, poorly differentiated or basaloid carcinomas, and are diagnosed in earlier T-category with a trend for a more advanced N-category, with cystic degeneration, than the HPV-unrelated carcinomas. HPV positivity is associated with better response to treatment and modality-independent survival benefit. Treatment selection in HPV-related oropharyngeal carcinoma is becoming a critical issue, and although there is no evidence from randomized, controlled trials to support a treatment de-escalation in HPV-positive SCC, some investigators argue that intensive combined modality strategies may represent an overtreatment.

Functional organ preservation in patients with locoregionally advanced head and neck squamous cell carcinoma treated by platinum-based multidrug induction chemotherapy and concurrent chemoradiotherapy.

BACKGROUND: The objective of this study was to evaluate the feasibility, safety, and efficacy in terms of functional organ preservation of multidrug induction chemotherapy and concurrent chemoradiotherapy (IC-CCRT) protocol in patients with locoregionally advanced head and neck squamous cell carcinoma (LA-HNSCC). PATIENTS AND METHODS: Patients with previously untreated, inoperable, histologically proven nonmetastatic stage III or IV HNSCC were eligible. Following one cycle of IC, two cycles of cisplatinum and 5-fluorouracil CCRT with conventional fractionated radiotherapy up to a dose of 66-70 Gy were administrated. RESULTS: Between January 2000 and July 2007, a total of 139 patients were candidates to receive IC-CCRT for LA-HNSCC. Overall, 83% of the patients completed the treatment. Three-year overall survival estimate was 68% [95% confidence interval (CI) 57% to 79%]. Three-year progression-free survival (PFS) estimate was 62% (95% CI 50% to 74%). Three-year functional PFS was 57% (95% CI 44% to 69%). There were no cases of treatment-related deaths. The most frequent severe acute toxicity was pharyngeal mucositis. CONCLUSIONS: Cisplatinum-based multidrug IC-CCRT can result in functional organ preservation and curative treatment in most patients with LA-HNSCC. The toxicity profile and patients' compliance to treatment confirmed the safety and tolerability of this approach.

[Brain abscesses after extracranial infections of the head and neck area]. / Hirnabszesse nach extrakraniellen Infektionen im Kopf-Hals-Bereich.

The authors report on 20 immunocompetent patients with brain abscess after 12 cases of middle ear, seven tooth and a single frontal sinus infection. The clinical aspects, hematochemical and microbiological data, the role of imaging diagnostics (CT, MR) and the type of treatment are analysed. Neurosurgery was performed on 17 patients (85%), eight of whom subsequently underwent evacuation of the primary source of infection (four mastoidectomies, two timpanoplasties, two tooth extractions). Mastoidectomy was eventually carried out on one of the three patients who did not undergo neurosurgery. Microbiological diagnosis was possible in nine patients through culture examination: Proteus mirabilis in three cases, Peptostreptococcus sp. in two, Micrococcus varians, Proteus vulgaris, Streptococcus sanguis and Streptococcus viridans not typed in single cases. The pus was sterile in eight patients (47.1% of those operated). An association of two antimicrobial agents was used in 18 patients, while in two cases monotherapy was preferred, based on the isolated bacteria. Treatment lasted on average 38 days. The most frequently used therapy regimen (75%) was the association of a beta-lactam drug with chloramphenicol or metronidazole. Therapy was successful in 19/20 patients; one patient died. There was no significant difference in prognostic terms with regard to sex, age, duration of symptoms prior to diagnosis, clinical picture at onset, number and size of abscesses or type of treatment. Recognising the first clinical signs and symptoms (headache, fever, alterations in consciousness, focal neurological deficit, epileptic seizures) is extremely important for prompt diagnosis of brain abscess.

Dermatomyositis and malignancy of the pharynx in Caucasian patients: report of two observations.

The association between dermatomyositis and malignancy of the pharynx is rare among whites but not uncommon among Far Eastern and north African populations. We report two cases of Caucasian Italian patients with dermatomyositis associated, respectively, with nasopharyngeal and tonsillar carcinomas. The relationship between dermatomyositis and malignancy is also discussed.

[Rhinopharyngeal carcinoma and dermatomyositis: description of a clinical case]. / Carcinoma del rinofaringe e dermatomiosite: descrizione di un caso clinico.

Nasopharyngeal carcinoma has long been reported as the predominant type of cancer associated with dermatomyositis in many several Asian countries, including Hong Kong, Singapore, and Southern-Cina. Dermatomyositis is one of the idiopathic inflammatory myopathies showing characteristic cutaneous manifestations. Reviews from the western literature have demonstrated that certain cancers, such as ovarian and breast carcinoma in women and lung and prostate carcinoma in men, are highly associated with DM relative to the general population. We report the case of a Caucasian Italian patient with nasopharyngeal carcinoma and dermatomyositis. Considering the rarity of nasopharyngeal carcinoma among whites, both the detection and the report of each new case are noteworthy in defining the geographic and ethnic distribution of this tumor.

Synovial sarcoma of the larynx and hypopharynx.

Synovial sarcoma represents a mesenchymal malignancy of unknown histogenesis that most often occurs in the lower limbs of young adults. The head and neck region is a relatively rare location, in which the hypopharynx and larynx are, respectively, the most and least often affected anatomic sites. Histologically, synovial sarcomas are classified into monophasic and biphasic variants. Immunohistochemistry plays a major part in the differential diagnosis, enabling the demonstration of epithelial differentiation. Both monophasic and biphasic synovial sarcomas are characterized cytogenetically by the reciprocal translocation t(X;18)(p11.2;q11.2) between chromosomes X and 18. Two cases of synovial sarcoma arising in the larynx and in the hypopharynx and in which cytogenetic analysis detected a diagnostic t(X;18) chromosome aberration are reported here.

Laryngeal pleomorphic rhabdomyosarcoma. A critical review of the literature.

A case report of pleomorphic rhabdomyosarcoma of the larynx is presented. It is the first case in which the diagnosis is supported by immunohistochemical investigation. A critical review of the literature follows, evaluating the clinicopathologic features of this rare malignancy.