Glomus tumor was also the name formerly (and incorrectly) used for a tumor now called a paraganglioma. A glomus tumor is a rare neoplasm arising from the. Paragangliomas account for % of all neoplasms in the head and neck region, and about 80% of all paraganglioms are either carotid body tumors or glomus. glomus vagal que tienen una llamativa predilección para las mujeres.9 Base de cráneo y cuello (timpánico, foramen yugular, nervio vago y tumor carotídeo.
|Published (Last):||8 March 2014|
|PDF File Size:||7.9 Mb|
|ePub File Size:||14.74 Mb|
|Price:||Free* [*Free Regsitration Required]|
Malignant glomus tumors, or glomangiosarcomasare extremely rare and usually represent a locally infiltrative malignancy. Early draining veins are also noted due to intra-tumoural shunting 4.
Vascular tissue neoplasm Glomus tumor Glomangiosarcoma. An otoscopic examination of the right ear revealed a well defined mesotympanic mass, and the left ear was found to be normal. Loading Stack – 0 images remaining. Glomus tumors are modified smooth muscle cells that control the thermoregulatory function of dermal glomus bodies.
The vast majority are found in the distal extremities, particularly in the hand, wrist, foot, and under the fingernails. It should be noted that this appearance is sometimes encountered in other lesions e.
Glomus tympanicum paraganglioma | Radiology Reference Article |
To formulate an effective treatment plan, the radiologist has to provide information regarding the site jugulare or tympanicumand the extent and vascularity of the tumour 2. Angiography demonstrates an intense timpnaico blush, with the most common feeding vessel being the ascending pharyngeal 3.
The meso-tympanic mass, the margins of which are visible atcan be identified as a glomus tympanicum tumour.
A few cases of malignant glomus tumors have been reported; however, they are usually only locally invasive, and metastases are exceedingly rare. Case 2 Case 2. Axial Glmus scan of middle ear. Radiographics full text [ pubmed citation ] 4. Sertoli-Leydig cell tumour Luteoma. Glomus jugulare tumours are defined according to location i.
A case report of widespread metastases in a patient with multiple glomus body hamartomas”.
The relative prevalence of glomus jugulare with respect to other head and neck paraganglioma varies from publication to publication and depending on definition of the terms jugulare, tympanicum and jugulotympanicum. A myringotomy and biopsy are to be usually avoided 2.
Case 3 Case 3. Imaging studies are necessary to depict the location and extent of tumor involvement, to help determine the surgical approach, and to predict operative morbidity and mortality.
Most glonus however that they are more common than glomus vagale 3. Log in Sign up. Glomus tympanicum and glomus jugulare tumours. Once a glomus tympanicum is diagnosed, no further imaging is necessary.
Small paraganglionomas in the middle ear cavity can be identified using otoscopy, but only a radiology examination will show whether the jugular bulb is involved. Patients with tumours in the middle ear present with tinnitus and deafness. Tumours are locally infiltrating, and may rarely metastasize 4. From Wikipedia, the free encyclopedia. Glomus tumor Micrograph of a glomus tumor. Growth of these tumor is in a number of directions.
Case 1 Case 1. Arch Otolaryngol Head Neck Surg.
Glomus jugulare tumor | Radiology Case |
Imaging Findings The patient presented with pulsatile tinnitus in the right ear, which she had had for a few years. Malignant glomus tumors have been subdivided into three categories based on their histologic appearance: Glomus jugulare or tympanicum? Surgery is the treatment of choice and if complete resection is achieved timpwnico cure can be expected.
Case with hidden diagnosis. Glomus tumors do not arise from glomus cellsbut paragangliomas do.