FDG PET/CT of Intercostal Schwannoma

Wang, Siyun; Luo, Di; Chen, Gang; Liu, Entao; Wang, Shuxia

doi:10.1097/rlu.0000000000001151

Cited by 7 publications

(5 citation statements)

References 8 publications

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“…18 F-FDG PET/CT can also detect LMC [21]; however, it is likely less sensitive compared to MRI, which offers superior tissue contrast, high-resolution multiplanar reformats, and dynamic contrast-enhanced capabilities. Unfortunately, 18 F-FDG PET/CT imaging is typically not helpful for distinguishing IAC metastases from vestibular schwannomas, as both masses show increased 18 F-FDG activity [22], [23], [24].…”

Section: Discussionmentioning

confidence: 99%

Leptomeningeal carcinomatosis and bilateral internal auditory canal metastases from ovarian carcinoma

Krupa

Byun

2017

Radiology Case Reports

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Ovarian cancer, a leading cause of death in women, typically spreads locally and rarely metastasizes to the brain or seeds the leptomeninges. We present a case of a 62-year-old woman with a history of treated ovarian cell carcinoma who developed bilateral sensorineural deafness and right-sided facial weakness and on imaging was found to have bilateral internal auditory canal (IAC) masses and leptomeningeal carcinomatosis, pathologically proven by cerebrospinal fluid cytology. We discuss her magnetic resonance imaging and positron emission tomography-computed tomography findings and review the imaging characteristics of IAC metastases. Finally, we review the literature on leptomeningeal carcinomatosis from ovarian cancer and discuss the high incidence of bilateral IAC metastases in patients with leptomeningeal carcinomatosis.

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Section: Discussionmentioning

confidence: 99%

Leptomeningeal carcinomatosis and bilateral internal auditory canal metastases from ovarian carcinoma

Krupa

Byun

2017

Radiology Case Reports

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“…[1][2][3][4][5] Even if schwannomas are considered to be benign and rarely undergo malignant transformation, they can usually show high 18 F-FDG uptake. [6][7][8][9][10] The false-positive 18 F-FDG uptake in the schwannomas, especially in those with unexpected location, are easily lead to the misinterpretation of schwannomas as malignancy in the imaging diagnosis. [11][12][13][14][15] PS arising from the pelvis is an extremely rare subtype of schwannoma, thus the literature on its 18 F-FDG PET/MRI findings was limited.…”

Section: Figurementioning

confidence: 99%

“…This rare pattern usually develops in the dermis or subcutaneous tissue for only 4% to 5% of all the schwannomas and is usually confined to the head and neck or skin [1][2][3][4][5]. Even if schwannomas are considered to be benign and rarely undergo malignant transformation, they can usually show high 18 F-FDG uptake [6][7][8][9][10]. The false-positive 18 F-FDG uptake in the schwannomas, especially in those with unexpected location, are easily lead to the misinterpretation of schwannomas as malignancy in the imaging diagnosis [11][12][13][14][15].…”

mentioning

confidence: 99%

Pelvic Plexiform Schwannoma on 18F-FDG PET/MRI

et al. 2021

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Plexiform schwannoma (PS), a subtype of schwannoma, is a rare benign nerve sheath tumor characterized by a multinodular plexiform growth pattern. It is usually confined to the head and neck or skin. Pelvic PS is an extremely rare occurrence and signifies a challenge for the imaging diagnosis. In this work, we present a 42-year-old woman with pelvic PS, who was initially suspected of malignant tumor on 18 F-FDG PET/MRI but confirmed as PS by postoperative pathology. We consider that this case would contribute to the literature and provide a further insight into diagnosing this kind of rare tumor.

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“…Several other case reports show that schwannomas are usually associated with a high 18F-FDG uptake on PET-CT ( 4 – 6 ). But, cases of schwannomas with low uptake exist even if they are less frequent ( 7 ).…”

Section: Introductionmentioning

confidence: 96%

False Positive 18F-FDG Positron Emission Tomography Findings in Schwannoma—A Caution for Reporting Physicians

et al. 2018

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Schwannoma is a rare source of false-positive 18F-fluorodeoxyglucose (18F-FDG) uptake in Positron-emission tomography (PET/CT), inducing potential errors in staging of several solid cancer, with implications for patient management. This clinical case reports the situation of a patient undergoing an 18F-FDG-PET/CT for initial staging of an ovarian adenocarcinoma. We found a high paramediastinal hypermetabolic mass suspicious of remote extension or secondary synchronous primitive tumor. The biopsy finally reveals a histopathology of Schwannoma, allowing the patient to be eligible for a surgical procedure of her ovarian adenocarcinoma by rejecting the hypothesis of malignancy.

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FDG PET/CT of Intercostal Schwannoma

Abstract: Intercostal schwannoma is rare. We report FDG PET/CT findings of intercostal schwannoma in a 66-year-old woman. The tumor contains both solid and cystic components with intense FDG activity in the solid component. Postsurgical pathology diagnosis revealed schwannoma.

Cited by 7 publications

References 8 publications

Leptomeningeal carcinomatosis and bilateral internal auditory canal metastases from ovarian carcinoma

Leptomeningeal carcinomatosis and bilateral internal auditory canal metastases from ovarian carcinoma

Pelvic Plexiform Schwannoma on 18F-FDG PET/MRI

False Positive 18F-FDG Positron Emission Tomography Findings in Schwannoma—A Caution for Reporting Physicians

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