Computed tomography and/or magnetic resonance imaging for pre-operative planning for inverted nasal papilloma: review of evidence

Abstract

There is currently not enough evidence to suggest one sole modality as providing optimum imaging for inverted nasal papilloma. Computed tomography remains the imaging modality of first choice for inverted nasal papilloma, despite certain disadvantages. Magnetic resonance imaging is able to distinguish tumour from inflammation and is advocated as a better tool for recurrent tumour, but bone destruction of sinus walls is less easy to recognise, compared with computed tomography. Evaluation of sinus tumours usually involves both imaging modalities, and inverted nasal papilloma should be included within this pathological group. The cohort of patients is usually small, so cost-effectiveness should not generally be an issue when considering whether to use computed tomography, magnetic resonance imaging or both. A well structured, prospective study is needed to evaluate the efficacy of magnetic resonance imaging versus computed tomography for pre-operative planning of histologically proven inverted nasal papilloma.

Intracranial extension of Schneiderian inverted papilloma: a case report and literature review

“…It is generally accepted that unilateral tumor localization involving the lateral nasal wall and the middle meatus is a diagnostic clue to IP. However, even experienced head and neck radiologists also have difficulty in diagnosing IP without a histopathological report because of the absence of pathognomonic radiographic appearance of this tumor [14], [16], [19], [20]. …”

“…The tumor may extend beyond the nasal fossa and paranasal sinuses into the nasopharynx, pterygoid fossa, nasolacrimal duct, retrobulbar region and brain in descending order of frequency. Despite being benign, 3 typical characteristics of this tumor include its relatively high recurrence rate, local aggressiveness and potential for malignant transformation: atypia, dysplasia, carcinoma in situ , and frank squamous cell carcinoma (SCC) [1], [2], [3], [4], [5], [7], [8], [10], [11], [12], [13], [14], [15], [16], [17], [18], [19], [20], [21], [22], [23], [24], [25], [26], [27], [28]. …”

Bilateral inverted papilloma: A report of two cases and review of the current literature

“…CT scanning is the initial modality of choice to evaluate the extent of disease [16]. Bony erosion can be present with inverted papillomas in as much as 44% [6] but raises concern over potential malignant change.…”

“…Bony erosion can be present with inverted papillomas in as much as 44% [6] but raises concern over potential malignant change. More recently magnetic resonance imaging has been used to aid in the assessment and guide surgery as it can accurately distinguish between retained secretions and the soft tissue of a tumor [6,16].…”

Isolated Inverting Papilloma of the Sphenoid Sinus

“…Inflammatory processes always show bright signal intensities on T2-weighted images and a lack of central enhancement on enhanced images. 28 In patient 2, the MRI scans revealed inflammation in the right posterior ethmoid sinus. Enhanced MRI is a useful radiologic technique to detect and diagnose IP in the sphenoid sinus.…”