A tumor mass removed from the subcutaneous tissue of the shoulder of a dog had the light and electron microscopic features of extraneuraxial meningioma. The neoplasm probably arose from arachnoid cap cells displaced during embryogenesis. Although intracranial canine meningiomas are common [ 141 no primary meningioma, to our knowledge, has been reported outside the central nervous system in dogs...

Hemangiopericytomas (HPC) are uncommon tumors that originate from perivascular cells of capillary vessels. HPC are about 1% of all vascular tumors and can be found in the head-neck region with an incidence between 16% and 33%. HPC is a neoplasm of uncertain malignant potential; it can behave as an aggressive tumor with metastases and increased mitotic activity or as a relatively benign neoplasm...

Leiomyoma is a type of benign smooth muscle neoplasm that is a common neoplasm of the uterus and gastrointestinal tract but rarely affects the head and neck region and is especially unlikely to affect the oral cavity. The diagnosis of leiomyoma is mainly determined by histopathological studies due to variation in its clinical appearance and symptoms. In the present paper we report two rare case...

  Background and Objective: Approximately 45% of benign peripheral nerve sheath tumors (PNST) occur in head and neck regions. Malignant peripheral nerve sheath tumors (MPNST) are less common and only 8-15% of these tumors occur in head and neck region. In this study, we aimed at evaluating the demographic characteristics, pathologic findings, locations, main clinical presentations and family h...

BACKGROUND The purpose of this study was to analyze the results of radiotherapy (RT) alone or combined with surgery for adenoid cystic carcinoma. METHODS Between September 1966 and November 2001, 101 previously untreated patients were treated with curative intent with RT alone or combined with surgery. Follow-up ranged from 0.4 to 30.6 years (median, 6.6 years). All living patients had follow...

Schwannoma or neurilemmoma are benign tumours originating from Schwann cells of the nerve sheath. They can arise from any peripheral, cranial, or autonomic nerve The treatment of extracranial head and neck schwannomas is surgical and the approach depends on the location and extent of the tumor and the nerve involved. The Authors report the case load of surgical managements of three different ex...

BACKGROUND The impact of comorbidities on patients with advanced head and neck cancer treated with major surgery has not been reported before. METHODS We retrospectively reviewed clinical charts between 2004 and 2011 at our institution and identified 185 patients with clinical stage III to IV head and neck cancer treated with major surgery. Comorbidities were scored using the Adult Comorbidit...

UNLABELLED Early diagnosis of oral, head and neck cancer is very important. Delay in diagnosis and referral to a specialist unit can result in an enlarged tumour with an increased chance of metastatic spread which will result in upstaging of the tumour, thus worsening the five year survival rate. There is a great need for early identification and referral of potentially malignant lesions by gen...

The presence of cutaneous metastases in squamous cell carcinomas of the head and neck (SCCHN) is rare and associated with a dismal prognosis. It is vital to distinguish these lesions from direct invasion of the skin by SCCHN or primary cutaneous malignancies as the prognosis is vastly different and so is the management. In this case report, we present four cases of cutaneous metastases and also...