Malignant peripheral nerve sheath tumor (MPNST) arising from angiosarcoma: a rare case report.

Purpose: An extremely rare case of divergent differentiation of a cutaneous angiosarcoma to a malignant peripheral nerve sheath tumor (MPNST) is presented.

Methods: A 62-year-old male patient presented with an angiosarcoma of the left buccal region, which was excised with wide surgical margins. Four months after the operation, the tumor recurred locally as a MPNST.

Head and neck Merkel cell carcinoma: a retrospective case series and critical literature review with emphasis on treatment and prognosis.

Objective: Merkel cell carcinoma (MCC) is a rare cutaneous malignancy with a high recurrence and mortality rates. More than half of MCCs occur in the head and neck region. This paper aims to present a retrospective case series study of primary MCCs of the head and neck treated in our department over 12 years.

A Simplified Reconstructive Technique for Full-thickness Central Defects of the Auricle with the Use of a Post-auricular Folded Flap.

Background: Post-auricular flaps have proved very effective in the reconstruction of most types of partial auricular defects. However, few reports exist regarding the reconstruction of centrally located perforating defects of the auricle.

Objectives: This paper aimed to describe a one-stage technique including a post-auricular folded flap (PAFF) for reconstruction of full-thickness defects of central auricular sites.

Metastatic Tumours to the Oral Cavity: Report of Three Cases.

Background: Metastatic tumours to the oral cavity from distant organs are uncommon and represent approximately 1 - 3% of all oral malignancies. Such metastases can occur to the bone or to the oral soft tissues. Almost any malignancy from any site is capable of metastasis to the oral cavity and a wide variety of tumours have been reported to spread to the mouth.

Carotid-Cavernous Fistula as a Complication of Facial Trauma: A Case Report.

Posttraumatic carotid-cavernous fistula is a very rare complication that can occur in patients with craniomaxillofacial trauma. Symptoms involve headache, diplopia, ptosis of the upper lid, conjunctival chemosis, pulsating exophthalmos, and ophthalmoplegia. Diagnosis can be challenging because various pathologic entities can present with similar symptoms such as superior orbital fissure syndrome, orbital apex syndrome, retrobulbar hematoma, and cavernous sinus syndrome.