RESUMO
ABSTRACT: Pleomorphic adenoma usually presents as a painless growing mass in locations of the salivary glands and is notorious for local recurrence if previous surgical resection is incomplete. Schwannoma is a benign peripheral nerve tumor with microscopic features of sheets of spindle-shaped cells with nuclear palisading. However, when a pathologist encounters a salivary gland tumor with microscopic morphological features of biphasic components with areas of schwannoma-like morphology, it is crucial to make a prudent diagnosis by differentiating Schwannoma-like pleomorphic adenoma and its differential diagnosis as they have remarkably different outcome in patients. We herein present a case of Schwannoma-like pleomorphic adenoma and discuss its approach to diagnosis and literature search.
RESUMO
Leimyosarcoma (lms) is a malignant soft tissue tumor of smooth muscles. The tumor arises intramuscularly and in subcutaneous locations. It is unusual to encounter lms in head and neck region, even more infrequent to discover lms in nasal and paranasal sinuses. A case of 28 years old male with leiomyosarcoma originating from sphenoid sinus with intracranial extension is being presented with aim to highlight its rarity and to highlight the differential diagnosis and the need for prudent diagnosis in the work-up of the patient.
