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Sharifi G, Amin Darozzarbi AA, Paraandavaji E, Lotfinia M, Kazemi MA, Hajikarimloo B, Jafari A, Mohammadi E, Davoudi Z, Akbari Dilmaghani N. Vertical triband flag sign for differential diagnosis of Rathke's cleft cyst. World Neurosurg X 2024; 21:100260. [PMID: 38187505 PMCID: PMC10770743 DOI: 10.1016/j.wnsx.2023.100260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 10/30/2023] [Accepted: 11/28/2023] [Indexed: 01/09/2024] Open
Abstract
Background The Rathke cleft cyst (RCC) is a type of cystic growth that is benign, circular, and well-defined with an incidence rate of 4 %. This study aims to identify a useful diagnostic imaging sign that can aid in the differentiation of RCC from other cystic lesions. Methods We retrospectively analyzed the records of 42 symptomatic RCC patients who were referred to our facility between 2016 and 2023. The data for the study were obtained from our electronic database. All magnetic resonance imaging (MRI) studies were performed using a 1.5-T superconducting magnetic scanner. All patients underwent endonasal transsphenoidal surgical resection. All MRIs were reviewed and evaluated by a neurosurgeon and a neuroradiologist. Results There were 8 (19 %) males and 34 (81 %) females with a mean age of 37.2-years. Our study identified a distinct imaging characteristic in 38 of the cases, which we have named the "vertical triband flag sign", due to the growth of the cyst developing a specific appearance. The flag sign was mostly observed only in the T1-images (71.5 %), while in four cases the sign was spotted only in T2-images, and in four cases it appeared in both T1 and T2. In 4 cases, the flag sign was not observed in which further investigations revealed that these cases were suprasellar or small sellar RCCs. The dot sign, which is a characteristic finding in RCCs was only observed in one of our cases. Conclusion Early diagnosis of RCCs may be facilitated by utilizing the vertical triband flag sign.
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Affiliation(s)
- Guive Sharifi
- Department of Neurosurgery, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Skull Base Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Amir Arsalan Amin Darozzarbi
- Department of Neurosurgery, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Skull Base Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Elham Paraandavaji
- Skull Base Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mahmoud Lotfinia
- Skull Base Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Department of Neurosurgery, Medical Center Saarbruecken, Saarland, Germany
| | - Mohammad Ali Kazemi
- Department of Radiology, Amiralam Hospital, Tehran University of Medical Sciences, Tehran, Iran
- Department of Radiology, Advanced Diagnostic and Interventional Radiology Research Center (ADIR), Medical Imaging Center, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran
| | - Bardia Hajikarimloo
- Skull Base Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ali Jafari
- Department of Neurosurgery, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Skull Base Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Esmaeil Mohammadi
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma, USA
| | - Zahra Davoudi
- Skull Base Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Department of Endocrinology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Nader Akbari Dilmaghani
- Skull Base Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Department of Otolaryngology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Tsujino K, Ikeda N, Kimura S, Higashiyama A, Furuse M, Nonoguchi N, Hiramatsu R, Yagi R, Kawabata S, Osuga K, Wanibuchi M. Optic Nerve Root Enhancement in Gadolinium-Enhanced Magnetic Resonance Imaging of Rathke's Cleft Cyst. World Neurosurg 2020; 146:157-161. [PMID: 33181383 DOI: 10.1016/j.wneu.2020.11.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 11/02/2020] [Accepted: 11/03/2020] [Indexed: 11/27/2022]
Abstract
BACKGROUND Although most patients with Rathke's cleft cysts (RCCs) remain asymptomatic throughout their lives, visual impairment in RCCs usually indicates surgical interventions, including endoscopic drainage of the cyst. We report a case of RCC with unique findings in the optic nerve root (ONR) by magnetic resonance imaging (MRI). CASE DESCRIPTION A 58-year-old man admitted to our hospital complained of progressive left visual impairment. Preoperative computed tomography MRI revealed a suprasellar cystic lesion that extended anteriorly, and the bilateral ONRs were lateralized with the cyst and were partially enhanced with gadolinium administration. The cyst content was drained, and the cyst wall was partially removed by endoscopic transsphenoidal surgery. Postoperatively, the patient was administered corticosteroid intravenously for 3 days, and his visual acuity improved dramatically. Postoperative MRI revealed that the volume of the cyst decreased, and the position of the bilateral ONRs normalized. Additionally, enhancement of the ONRs with gadolinium administration was not observed. Histological examination of the surgical specimen revealed a ciliated single-layer columnar epithelium with inflammatory cell infiltration. CONCLUSIONS To our knowledge, we report the first case of a patient with RCC with ONR enhancement with gadolinium administration on MRI. This unique finding might prove that inflammation is one of the causes of visual impairment in RCC as in optic neuritis.
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Affiliation(s)
- Kohei Tsujino
- Department of Neurosurgery and Neuroendovascular Surgery, Osaka Medical College, Osaka, Japan
| | - Naokado Ikeda
- Department of Neurosurgery and Neuroendovascular Surgery, Osaka Medical College, Osaka, Japan.
| | - Seigo Kimura
- Department of Neurosurgery and Neuroendovascular Surgery, Osaka Medical College, Osaka, Japan
| | - Akira Higashiyama
- Department of Diagnostic Radiology, Osaka Medical College, Osaka, Japan
| | - Motomasa Furuse
- Department of Neurosurgery and Neuroendovascular Surgery, Osaka Medical College, Osaka, Japan
| | - Naosuke Nonoguchi
- Department of Neurosurgery and Neuroendovascular Surgery, Osaka Medical College, Osaka, Japan
| | - Ryo Hiramatsu
- Department of Neurosurgery and Neuroendovascular Surgery, Osaka Medical College, Osaka, Japan
| | - Ryokichi Yagi
- Department of Neurosurgery and Neuroendovascular Surgery, Osaka Medical College, Osaka, Japan
| | - Shinji Kawabata
- Department of Neurosurgery and Neuroendovascular Surgery, Osaka Medical College, Osaka, Japan
| | - Keigo Osuga
- Department of Diagnostic Radiology, Osaka Medical College, Osaka, Japan
| | - Masahiko Wanibuchi
- Department of Neurosurgery and Neuroendovascular Surgery, Osaka Medical College, Osaka, Japan
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