CT and MR imaging characteristics of histological subtypes of head and neck ossifying fibroma

Objective: This study aims to assess the CT and MRI features of head and neck osteosarcoma (HNO). Methods: 37 HNOs were identiﬁed, and the following imaging characteristics were reviewed on CT and MRI. Results: A total of 37 patients(age 41.5 ± 15.0 years old; 16 males, 21 females) were included in the study. Tumours occurred in the maxilla (16, 43.2%), mandible (8, 21.6%), skull base (6, 16.2%), calvarium (5, 13.5%), paranasal sinuses (1, 2.7%) and cervical soft tissue (1, 2.7%). 16 patients received radiotherapy for nasopharyngeal carcinoma. Three patients (8.1%) developed osteosarcomas related to a primary bone disease. 16 of the (43.2%) tumours demonstrated lytic density on CT scans, followed by 13 (35.1%) showing mixed density and 7 (18.9%) with sclerotic density. Matrix mineralization was present in 32 (86.5%). 3 out of 24 (12.5%) tumours showed lamellar periosteal reactions, 21 out of 24 (87.5%) showed spiculated periosteal reactions. 12 tumours showed low signal intensities on T1WI, with 16 having heterogeneous signal intensities. 10 tumours showed high signal intensities on T2WI, and 18 showed heterogeneous signal intensities. With contrast-enhanced images, 3 tumours showed homogeneous enhancement (2 osteoblastic and 1 giant cell-rich), 18 tumours showed heterogeneous enhancement (13 osteoblastic, 4 fibroblastic and 1 giant cell-rich), and 7 tumours showed peripheral enhancement (6 chondroblastic and 1 osteoblastic). These tumours were characterized by soft tissue masses with a diameter of 5.6 ± 1.8 cm. Conclusions: HNO is a rare condition and is commonly associated with previous radiation exposure. This study provides age, sex distribution, location, CT and MRI features of HNO.

Download Full-text

Can extranodal spread in head and neck cancer be detected on MR imaging

Oral Oncology ◽

10.1016/j.oraloncology.2013.02.010 ◽

2013 ◽

Vol 49 (6) ◽

pp. 626-633 ◽

Cited By ~ 25

Author(s):

Wouter L. Lodder ◽

Charlotte A.H. Lange ◽

Marie-Louise F. van Velthuysen ◽

Michael Hauptmann ◽

Alfons J.M. Balm ◽

...

Keyword(s):

Head And Neck Cancer ◽

Mr Imaging ◽

Head And Neck ◽

Neck Cancer

Download Full-text

Whole-body-MR imaging including DWIBS in the work-up of patients with head and neck squamous cell carcinoma: A feasibility study

European Journal of Radiology ◽

10.1016/j.ejrad.2014.03.019 ◽

2014 ◽

Vol 83 (7) ◽

pp. 1144-1151 ◽

Cited By ~ 12

Author(s):

Daniel P. Noij ◽

Els J. Boerhout ◽

Indra C. Pieters-van den Bos ◽

Emile F. Comans ◽

Daniela Oprea-Lager ◽

...

Keyword(s):

Squamous Cell Carcinoma ◽

Mr Imaging ◽

Cell Carcinoma ◽

Head And Neck ◽

Feasibility Study ◽

Squamous Cell ◽

Neck Squamous Cell Carcinoma ◽

Whole Body ◽

Work Up

Download Full-text

Head and Neck MR Imaging

Neuroimaging Clinics of North America ◽

10.1016/j.nic.2004.08.001 ◽

2004 ◽

Vol 14 (4) ◽

pp. xi

Author(s):

Suresh K. Mukherji

Keyword(s):

Mr Imaging ◽

Head And Neck

Download Full-text

Hemorrhagic and nonhemorrhagic Rathke cleft cysts mimicking pituitary apoplexy

Journal of Neurosurgery ◽

10.3171/jns/2008/108/01/0003 ◽

2008 ◽

Vol 108 (1) ◽

pp. 3-8 ◽

Cited By ~ 46

Author(s):

Mandy J. Binning ◽

James K. Liu ◽

John Gannon ◽

Anne G. Osborn ◽

William T. Couldwell

Keyword(s):

Mr Imaging ◽

Pituitary Tumor ◽

Pituitary Apoplexy ◽

Pituitary Tumors ◽

Imaging Features ◽

Mr Images ◽

Acute Hemorrhage ◽

Consistent Finding ◽

Imaging Characteristics ◽

Intracystic Hemorrhage

Object Rathke cleft cysts (RCCs) are infrequently symptomatic, and apoplexy is one of the most unusual presentations. Only a few cases of apoplexy associated with RCCs have been reported, and their clinical, imaging, surgical, and pathological features are poorly understood. In the cases that have been reported, intracystic hemorrhage has been a consistent finding. The authors report 6 cases of RCCs in which the presenting clinical and imaging features indicated pituitary apoplexy, both with and without intracystic hemorrhage. Methods The authors retrospectively reviewed charts and magnetic resonance (MR) imaging studies obtained in patients who underwent transsphenoidal surgery for RCC. Six patients were identified who presented with symptoms and MR imaging characteristics consistent with pituitary apoplexy but were found intraoperatively to have an RCC. All 6 patients presented with a sudden headache, 2 with visual loss, and 1 with diplopia. Review of the preoperative MR images demonstrated mixed signal intensities in the sellar masses suggestive of a hemorrhagic pituitary tumor. In all patients there was a presumed clinical diagnosis of pituitary tumor apoplexy and an imaging-documented diagnosis of hemorrhagic pituitary tumor. Results All 6 patients underwent transsphenoidal resection to treat the suspected pituitary apoplexy. Intraoperative and histopathological findings were consistent with the diagnosis of an RCC in all cases. Only 2 cases showed evidence of hemorrhage intraoperatively. In all cases, an intracystic nodule was found within the RCC at surgery, and this intracystic nodule was present on the initial MR imaging when retrospectively reviewed. The imaging characteristics of the intracystic nodules were similar to those of acute hemorrhage seen in cases of pituitary apoplexy. Conclusions The clinical and imaging features of RCCs appear similar to those of hemorrhagic pituitary tumors, making them often indistinguishable from pituitary apoplexy.

Download Full-text

PET–MR Imaging in Head and Neck

Magnetic Resonance Imaging Clinics of North America ◽

10.1016/j.mric.2016.12.008 ◽

2017 ◽

Vol 25 (2) ◽

pp. 315-324 ◽

Cited By ~ 3

Author(s):

Yueh Z. Lee ◽

Joana Ramalho ◽

Brice Kessler

Keyword(s):

Mr Imaging ◽

Head And Neck

Download Full-text