CT findings in two cases of lobular capillary haemangioma of the nasal cavity: focusing on the enhancement pattern

Abstract

Lobular capillary haemangioma, known as pyogenic granuloma, is a relatively common benign vascular neoplasm that is composed of hyperplastic clusters of capillaries arranged in a lobular architectural pattern. Most mucosal lobular capillary haemangioma (LCH) of the head and neck arise in the oral cavity, but the nasal cavity involvement is rare. We report here on the CT imaging findings of two cases of LCH involving the nasal cavity, with an emphasis being placed on the different pattern of enhancement of the tumour on the enhanced CT scans.

Lateral Nasal Capillary Haemangioma a Rare Occurrence—Case Report and Literature Review

“…The first description of Lobular capillary haemangiomas was in 1897 by Poncet A CT scan without contrast enhancement should show a well-defined soft-tissue mass able to undergo intense enhancement on postcontrast study [25]. Generally, bony erosion is not associated with lobular nasal capillary haemangiomas, though a few studies do find this symptom to be a characteristic [26].…”

“…The most common presenting symptoms of CH of the nasal cavity include recurrent unilateral epistaxis and nasal obstruction; facial pain, alteration of smell, and headache are seldom observed [25]. At endoscopy, the lesion usually appears as a single hypervascularized mass of a red to purple color, not exceeding 1 cm, and with a predilection for the anterior portion of the nasal septum.…”

Lobular Capillary Hemangioma of the Ethmoid Sinus: A Report of Two Cases

“…In the residual cases (16.7 %), CT findings consisted of a lobular, intensely enhancing mass and a hypoattenuating area containing linear and spotty enhancing foci. Some believe that the degree of enhancement of the tumour on the CT scans is not constant, probably due to the variable size of both the tumour and vessels [14]. LCH was not thought to be universally associated with bony erosion though a few studies have found bony erosion to be more common [15].…”

Intranasal lobular capillary haemangioma

“…MRI demonstrates T1 hypointensity and T2 hyperintensity in LCH. Bone erosion in LCH is mainly due to compressive devascularisation by the tumour 1 2 5 9 10. Angiography reveals the presence of increased vascularity due to the extensive feeding vessels to the tumour 3…”