Pathology of the Oral Region

Forghani, Reza; Smoker, Wendy R. K.; Curtin, Hugh D.

doi:10.1016/b978-0-323-05355-6.00028-8

Cited by 5 publications

(4 citation statements)

References 462 publications

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“…The multiple coalesced fat globules of a compound dermoid are clearly visible on MRI 3) . In the present case, no such fat globules were apparent, however, and most of the cyst showed high signal intensity on MRI (Figs.…”

Section: Discussionmentioning

confidence: 99%

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Atypical MRI and Histopathological Findings in Dermoid Cyst

Otonari-Yamamoto

Nakajima

Sakamoto

et al. 2018

Bull. Tokyo Dent. Coll.

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On images, a dermoid cyst is often described as resembling a "sack of marbles" or "marbles in a bag". Typically, it comprises an inhomogeneity filled with multiple nodules in a fluid matrix on both computed tomography and magnetic resonance imaging (MRI). How it appears, however, will vary depending on its histological contents, which may cause confusion in arriving at a diagnosis. This report describes a dermoid cyst in the floor of the mouth of a 55 year-old woman that showed an atypical internal appearance on MRI. Most of the lesion showed homogeneous high signal intensity on T1 - and T2-weighted images, suggesting that it was derived from fat. A small area within the mass, however, showed moderate signal intensity almost equal to that of muscle on T1-weighted images and high signal intensity on fat-suppressed T2-weighted images. Given the location of the lesion, a dermoid cyst was one possible diagnosis. A lipoma or lipoma variants were also considered, however, based on signal intensity. Histopathological section of the excised specimen revealed a dermoid cyst with sebaceous glands in its walls and keratin in its cavity. Dermoid cysts show variation in their internal structures and contents. Since MRI can reflect such histological variation, signal intensity requires careful interpretation.

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Section: Discussionmentioning

confidence: 99%

“…Fat-saturated images are very helpful for confirmation. The presence of fat globules within the lesion suggests a dermoid cyst 3) .…”

Section: Discussionmentioning

confidence: 99%

Atypical MRI and Histopathological Findings in Dermoid Cyst

Otonari-Yamamoto

Nakajima

Sakamoto

et al. 2018

Bull. Tokyo Dent. Coll.

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“…Denervation changes may be visualized in lingual muscles supplied by the hypoglossal nerve after surgery. Denervation of muscles is typically manifested by decreased attenuation (secondary to edema or fatty infiltration due to muscle atrophy) on a CT scan (Figure 25), signal alteration (typically increased intensity on a T2-weighted image), contrasted enhancement on MRI (in early stage), and swelling in the early stage and atrophy in the chronic stage [5,18]. Such asymmetry may be recognized as local failure by a novice [5].…”

Section: Anatomical Distortionmentioning

confidence: 99%

Essentials on Oncological Imaging: Postoperative Computed Tomography and Magnetic Resonance Imaging of Oral Tongue Cancer

et al. 2018

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The contribution of diagnostic imaging in evaluating the pre- and postoperative status of tongue cancer is essential. Interpretation of postoperative images is made difficult by deformation; therefore, it is necessary to know how surgical technique, biological reaction, postoperative anatomy, and local recurrence are reflected on the images. This study explains the postoperative imaging features of tongue cancer to help in the early detection of local recurrence and avoid inappropriate treatment. We review schematic drawings of representative surgical procedures for tongue carcinoma, variable radiological features in postoperative conditions with or without complications, and typical features of local failures and their mimics. This article clarifies the important tasks of radiologists and clinicians in the postoperative evaluation of tongue carcinoma.

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“…Malignancy may occur in thyroid, but is rare. 4 Investigative procedures, which can be of useful are USG, CT, MRI, FNAC, radionuclide scintigraphy and thyroid function tests. CT is very useful because iodine concentrated within the functioning ectopic tissue makes it appear dense on CT. 5…”

Section: Introductionmentioning

confidence: 99%

Ectopic Thyroid Tissue- A Rare Case

Bindu¹,

Srihari²,

K³

et al. 2016

jebmh

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BACKGROUND Ectopic thyroid is a condition in which the thyroid tissue is present in locations other than the normal anterior neck region between the second and fourth tracheal cartilages. Its prevalence is 1 per 1,00,000-3,00,000 people. About 500 cases have been reported in the English literature mainly from Europe, Asia and America with a small number of reports coming from Africa. Ectopic thyroid tissue is a rare entity resulting from developmental defects in the migration of thyroid primordium from the foramen cecum at the base of the tongue to the infrahyoid portion of the neck between second and fourth tracheal cartilages. Ectopic thyroid tissue can occur anywhere along the course of the thyroglossal tract. Lingual thyroid is the most common type of ectopic thyroid accounting for 90% of cases. The most important differential diagnosis for ectopic thyroid is adenomas, metastatic thyroid tissue and hypertrophied lingual tonsil.

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Pathology of the Oral Region

Cited by 5 publications

References 462 publications

Atypical MRI and Histopathological Findings in Dermoid Cyst

Atypical MRI and Histopathological Findings in Dermoid Cyst

Essentials on Oncological Imaging: Postoperative Computed Tomography and Magnetic Resonance Imaging of Oral Tongue Cancer

Ectopic Thyroid Tissue- A Rare Case

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