An infiltrative angioarchitectural variant of arteriovenous malformation of temporalis.
Vascular anomalies of the head and neck region pose a certain diagnostic and therapeutic paradox. Management of arteriovenous malformations (AVM) is a challenge owing to the presence of abnormal vascular communications and high recurrence. We report a case of a 19-year-old male patient, who presented with diffuse swelling in the right temporal region. Magnetic Resonance Angiography (MRA) suggested it to be an AVM in the temporalis muscle, having afferents in the ascending pharyngeal artery, with cavernous angioma. Surgical excision of the lesion was carried out under carotid control. Histopathology of the excised specimen utilizing special stains confirmed the presence of AVM. An absence of distinct nidus concomitant along with the exuberant proliferation of capillaries between the muscle fibres suggested it be an infiltrative angioarchitectural variant. The present case highlights significance of diagnosing AVM in temporalis muscle which is a rare occurrence in head and neck region. Also, the importance of ruling out other closely resembling vascular diathesis, both non neoplastic and malignant is discussed.
Resident, Department of Oral Pathology and Microbiology, Manipal College of Dental Sciences , Manipal University, Manipal, India .
Aditi Amit
AA
Byatnal
Resident, Department of Oral Pathology and Microbiology, Manipal College of Dental Sciences , Manipal University, Manipal, India .
Mahima
M
Rakheja
Assistant Professor, Department of Oral Medicine and Radiology, AMES Dental College and Hospital , Raichur, Karnataka, India .
Amit Raghavendra
AR
Byatnal
Consultant, Craniofacial and Dental Hospital , K. K. Nagar, Madurai, Tamil Nadu, India .
Venkadasalapathy
V
Narayanaswamy
Professor, Department of Oral Pathology and Microbiology, Manipal College of Dental Sciences , Manipal University, Manipal, India .
Raghu
R
Radhakrishnan
Arteriovenous malformations; Elastic stains; Magnetic resonance angiography