C Campidelli1, L Di Tommaso, G Zanetti. 1. Dipartimento clinico di Scienze Radiologiche ed Istocitopatologiche, Servizio di Anatomia ed Istologia patologica, Policlinico S. Orsola-Malpighi, Università di Bologna.
Abstract
INTRODUCTION: Aneurysmal bone cyst (ABC) are benign tumor-like lesions of the bone that occur at any age with a slight female predominance. The most common sites are long bones and vertebrae bodies. MATERIALS AND METHODS: We report a case of 54 year-old man with nasal respiratory difficulty and a previous history of nasal fracture. RMN and TC-scan showed a voluminous nasal lesion, which was surgically removed. Tissue sample was formalin fixed (10%) and routinely processed to paraffin after decalcifying treatment (Osteodec, Bioptica). Section were stained with haematoxilin-eosin. RESULTS: At histological level the lesion was characterized by multilocular cyst-like spaces filled with erythrocytes separated by connective septa lacking the smooth muscle walls and endothelial lining of normal vessels. Histological features are consistent with a diagnosis of ABC. DISCUSSION: We report a case of ABC of nasal cavity. The previous history of nasal fracture and the fact that pre-existing or concurrent were not found lead us to suppose a relationship between the fracture and ABC. Teleangiectatic osteosarcoma, fibrous dysplasia and giant-cell tumor were excluded according to clinical and morphological features.
INTRODUCTION:Aneurysmal bone cyst (ABC) are benign tumor-like lesions of the bone that occur at any age with a slight female predominance. The most common sites are long bones and vertebrae bodies. MATERIALS AND METHODS: We report a case of 54 year-old man with nasal respiratory difficulty and a previous history of nasal fracture. RMN and TC-scan showed a voluminous nasal lesion, which was surgically removed. Tissue sample was formalin fixed (10%) and routinely processed to paraffin after decalcifying treatment (Osteodec, Bioptica). Section were stained with haematoxilin-eosin. RESULTS: At histological level the lesion was characterized by multilocular cyst-like spaces filled with erythrocytes separated by connective septa lacking the smooth muscle walls and endothelial lining of normal vessels. Histological features are consistent with a diagnosis of ABC. DISCUSSION: We report a case of ABC of nasal cavity. The previous history of nasal fracture and the fact that pre-existing or concurrent were not found lead us to suppose a relationship between the fracture and ABC. Teleangiectatic osteosarcoma, fibrous dysplasia and giant-cell tumor were excluded according to clinical and morphological features.