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Document Type |
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Article In Journal |
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Document Title |
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PAROTID TUMORS: CT AND MR IMAGING FEATURES WITH PATHOLOGICAL PAROTID TUMORS: CT AND MR IMAGING FEATURES WITH PATHOLOGICAL |
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Document Language |
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English |
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Abstract |
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The majorily of salivmy gland IUmors are found in the parotid gland. Between 70% and 80% of parotid gland
llImors are benign Parotid gland IUlI/ors are characleri::.edby 0 11'idevariety of hislOpathologies and biologic
hehavior.
Objective: The aim of this sllldy is to correlate the CT and AiR imagingfealures of parotid lZil1lors11'iththeir
pathological appearances. .
,~1et1rods:Among 75 patients with parotid swellings investigated in the radiology departmel1f- Alexandria 1.1ail1
University Hospital, only 25 patients who proved 10 have parotid tumors were included in the current sludy. All
patienls inciuded in the slUdy undenl'e11l surgel]! and pathological examination of the resected specimens. CT
sllldies were obtained i~1all the patients. 1n 14patients, MR imaging studies 111ere pelformed as well.
Results: This sllldy included 25 patients 111ith pathologically proven parotid tumors. Their ages rangedfrom 22 to
64 years with a mean age of 38 years. Fourteen patients illere males and 111l1erefemales. Theparotid tumors
included in the current study showed 1l1ell-definedoutlines in 23 out of the 25 patients (92%), while the outlines
were ill defined in two cases (8%). The lumor lI'as limited to the superficial portion of the gland in 20 patienls
(80%), meamllhile, both the superficial and deep lobes of the gland were involved in 5patients (20%). 1n21 out of
the 25 parotid tumors included in this study (84%), CT showed a homogeneous density pattern in the non contrast
images being hyperdense in 19 patients (76%) Llndhypodense in Mo patients (8%). The remaining/our patiems
(16%) sh011'ed a heterogeneous mixed density pat/ern. 1n the contrast enhanced CT scans; 23 out of the 25
patiel1fs (92 %) sh011'edenhancement being homogeneous in 14 cases (60.9 %) and heterogeneous in 9 cases (39.1
%)
Among the 14 cases examined with MRl, the tumor involved the supeJjicial portion of the gland in 10 cases
(71.4%) 11'hile both lobes of the gland 111ereinvolved in4 cases (28.6%).ln 13 of the 14 patients (92.2%), {he
11I1110rs shOllJed11'elldefined olltlines, while the remaining tllmor revealed ill definition of its outline. 1n 13patients
(92.9%), the examined 1l1mors 111eremuscle isointense in TJ W1,while a heterogeneous pattern was noted in the
remaining patient. 1/1 T2-WJ, the signal intensity was homogeneously hyperintense i/1 8 patients (57.2%), while it
1I)OS helerogeneous in 5 patients (42.8%) in the form of hyperintensity 111ithalternating areas of hypo- and deep
hyperintensity.
1n all patiems included in the cllrrem study, both CT and MRl studies were negative regarding the presence of
associated regional cervical lymphadenopathy.
Conclusion: According to the results obtained in the current study, we conclude that e;xceptfor lipoma and high
grade malignancy; the distinction between benign and malignant parotid tumorsfreqllently cannot be made based
solely on the mOlphology as demonstrated by eT and MR imaging. By utilizing the imaging and clinical findings
together, h011'ever,such a distinction may be able to made. |
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ISSN |
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1110-0834 |
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Journal Name |
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Bulletin of Alexandria Faculty of Medicine |
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Volume |
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32 |
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Issue Number |
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2 |
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Publishing Year |
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2000 AH
2000 AD |
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Article Type |
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Article |
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Added Date |
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Monday, May 19, 2008 |
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Researchers
| عادل رمضان | Ramadan, Adel | Investigator | Doctorate | |
| خالد النويعم | El-Noueam, Khaled | Researcher | Doctorate | |
| خالد مغازي | Moghazy, Khaled | Researcher | Doctorate | |
| منال النويعم | El-Nouaem, Manal | Researcher | Doctorate | |
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