Immunohistological Studies on Growth Potential of Head and Neck Carcinomas.

Adnexal carcinomas of the head and neck

Adnexal carcinomas of the skin are rare and they derive from structures such as sweat glands, sebaceous glands, and hair follicles. Adnexal tumors represent 1-2% of skin cancers. Between 1998 and 2004, eight patients with malignant adnexal tumors of the head and neck were treated in the Plastic Surgery Service in Argerich Hospital in Buenos Aires, Argentina. Four (50%) of them had malignant cyl...

[Neuroendocrine carcinomas of the head and neck].

Neuroendocrine carcinomas (NECs) of the head and neck are rare. Between 1980 and 1995, only 163 cases of laryngeal and 30 cases of sinonasal NEC had been reported worldwide. We report two cases of sinonasal NEC. Case 1: A 49-year-old man complaining of left nasal obstruction was admitted to our hospital. A tumor with a tendency to bleed was seen in the left nasal cavity. CT scanning revealed an...

Tumor deposits in head and neck carcinomas.

BACKGROUND Tumor deposits, nodules in the peritumoral adipose tissue with no architectural residue of lymph node, have previously been described in colorectal adenocarcinomas. To date, however, there has been no examination of tumor deposits in head and neck squamous cell carcinoma (HNSCC). METHODS Neck dissection specimens of 140 patients with HNSCC were reevaluated for tumor deposits. RES...

Human papillomaviruses in head and neck carcinomas.

Prognostic and Therapeutic Potential of Nuclear Receptors in Head and Neck Squamous Cell Carcinomas

Head and neck squamous cell carcinomas are among the most common neoplasms worldwide and characterized by local tumor aggressiveness, high rate of early recurrences, development of metastasis, and second primary cancers. Despite modern therapeutic strategies and sophisticated surgical management, overall survival-rates remained largely unchanged over the last decades. Thus, the need for novel t...