Extraskeletal myxoid chondrosarcoma of the masticator space in a pediatric patient.

Extraskeletal myxoid chondrosarcoma (EMC) is a malignant soft-tissue neoplasm rarely described in the head and neck region of children and adolescents. We describe a case of EMC affecting the masticator space and a literature review. A 13-year-old boy who presented a large painless, diffuse mass causing progressive midfacial asymmetry of 6 months duration.

Marginal zone lymphoma of mucosa-associated lymphoid tissue with prominent plasma cell differentiation affecting the palatine tonsil: histopathological and immunohistochemical analysis.

Non-Hodgkin lymphomas (NHLs) of the oral cavity and oropharynx constitute 13% of all primary extranodal NHLs. Marginal zone B-cell lymphoma of the mucosa-associated lymphoid tissue (MALT lymphoma) in the palatine tonsil is rare, corresponding to 6% of the NHLs of the Waldeyer ring. Some cases of MALT lymphoma can present prominent plasma cell differentiation, and less commonly, monoclonal gammopathy.

Metastatic disease to the parotid gland.

Objectives: The purpose of this study was to review the clinico-pathologic findings and outcome of patients with metastasis to the parotid lymph nodes and gland.

Methods: Retrospective study. Thirty-four out of 520 patients with a parotid mass treated at our institution met the criteria for this study.

Radionecrosis or tumor recurrence after radiation of laryngeal and hypopharyngeal carcinomas.

Objective: To analyze the incidence and diagnostic difficulties of radionecrosis vs tumor recurrence of laryngeal and hypopharyngeal carcinomas.

Study Design And Setting: Retrospective study on 341 patients treated by radiation alone or radiochemotherapy. The clinicopathologic findings, work-up, treatment, and follow-up of 20 patients with symptoms suggestive but negative for tumor recurrence on initial imaging studies and endoscopy were analyzed.

Histologic characteristics and tumor spread of recurrent glottic carcinoma: analysis on whole-organ sections and comparison with tumor spread of primary glottic carcinomas.

Background: The assessment of the precise tumor extent of recurrent glottic carcinomas is a challenge.

Methods: The histologic characteristics of 29 recurrent glottic carcinomas after radiation failures, initially classified as T1 and T2, were analyzed on whole-organ slices. The growth patterns of 21 recurrent prT3 and prT4 and 52 primary pT3 and pT4 carcinomas were compared.