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Article: Usefulness of cyst-subarachnoid shunt using syringo-subarachnoid shunt tube for symptomatic enlarging ventriculus terminalis: A case report and review of the literature.

Shigekawa, Seiji / Matsui, Seishi / Inoue, Akihiro / Shinohara, Naoki / Kunieda, Takeharu

Surgical neurology international

2023 Volume 14, Page(s) 165

Abstract: Background: The ventriculus terminalis (VT) is a cystic embryological remnant of the conus medullaris that usually regresses after birth. This structure rarely persists into adulthood and may produce neurological symptoms. We recently encountered three ... ...

Abstract	Background: The ventriculus terminalis (VT) is a cystic embryological remnant of the conus medullaris that usually regresses after birth. This structure rarely persists into adulthood and may produce neurological symptoms. We recently encountered three cases of symptomatic enlarging VT. Case description: The three female patients were 78, 64, and 67 years old. Symptoms included pain, numbness, motor weakness, and frequent urination that gradually worsened. Magnetic resonance imaging revealed cystic dilatations of slow growing VT. These patients showed marked improvement after cyst-subarachnoid shunt using a syringo-subarachnoid shunt tube. Conclusion: Symptomatic enlarging VT is an extremely rare cause of conus medullaris syndrome and the optimal treatment strategy remains unclear. Surgical management may thus be appropriate for patients with symptomatic enlarging VT.
Language	English
Publishing date	2023-05-05
Publishing country	United States
Document type	Case Reports
ISSN	2229-5097
ISSN	2229-5097
DOI	10.25259/SNI_120_2023
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Article: High aldosterone levels in the renal capsular vein from the left aldosterone-producing adenoma on adrenal venous sampling.

Hirose, Rei / Tannai, Hiromitsu / Nakai, Kazuki / Makita, Kohzoh / Matsui, Seishi / Saito, Jun

Endocrinology, diabetes & metabolism case reports

2023 Volume 2023, Issue 3

Abstract: Summary: A 42-year-old female patient was referred to our hospital with hypertension and hypokalemia and was diagnosed with primary aldosteronism. Dynamic contrast-enhanced computed tomography images revealed a 13-mm nodule on the lateral segment of the ...

Abstract	Summary: A 42-year-old female patient was referred to our hospital with hypertension and hypokalemia and was diagnosed with primary aldosteronism. Dynamic contrast-enhanced computed tomography images revealed a 13-mm nodule on the lateral segment of the left adrenal gland and a fine venous connection between the nodule and the prominent renal capsular vein running nearby. The venograms in the left lateral tributary with a microcatheter confirmed alternative drainage to the left renal capsular vein during adrenal venous sampling, and the left renal capsular vein sampling was added. The patient was diagnosed with a left aldosterone-producing adenoma (APA) using the lateralization index (48.3) and a higher plasma aldosterone concentration (PAC) of the left lateral tributary (66 700 pg/mL) than other tributary samples after adrenocorticotropic hormone stimulation. Furthermore, markedly higher PAC (224 000 pg/mL) was observed in the left renal capsular vein blood than in the left adrenal central vein (45 000 pg/mL) and tributaries, confirming the diagnosis. Laparoscopic left partial adrenalectomy and following histopathological analysis revealed a CYP11B2-positive adrenocortical adenoma. Complete clinical and biochemical success for primary aldosteronism was achieved after 6 months. Direct evidence of APA blood venous drainage into the renal capsular vein has been demonstrated. Sampling from an alternative drainage pathway could be beneficial for APA diagnosis if such APA blood drainage is assumed. Learning points: Aldosterone-producing adenomas may drain blood into an alternative pathway but for the adrenal vein. The presence of alternative venous drainage could be assumed by contrast-enhanced computed tomography or venogram during adrenal venous sampling. Sampling in the alternative drainage veins and demonstrating elevated aldosterone levels could help in diagnosing aldosterone-producing adenoma.
Language	English
Publishing date	2023-08-02
Publishing country	England
Document type	Journal Article
ZDB-ID	2785530-2
ISSN	2052-0573
ISSN	2052-0573
DOI	10.1530/EDM-23-0041
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Article ; Online: Adrenal venous sampling criteria for chemiluminescent enzyme immunoassay as a preferable alternative to radioimmunoassay in primary aldosteronism.

Nakai, Kazuki / Tsurutani, Yuya / Irie, Koki / Teruyama, Kyoko / Suematsu, Sachiko / Matsui, Seishi / Makita, Kohzoh / Saito, Jun / Omura, Masao / Nishikawa, Tetsuo

Endocrine journal

2024

Abstract: Plasma aldosterone concentration (PAC) was routinely measured using radioimmunoassay (RIA); however, the RIA kit was discontinued in March 2021 in Japan. This study examined PAC conversion in adrenal venous sampling (AVS) and AVS criteria when measured ... ...

Abstract	Plasma aldosterone concentration (PAC) was routinely measured using radioimmunoassay (RIA); however, the RIA kit was discontinued in March 2021 in Japan. This study examined PAC conversion in adrenal venous sampling (AVS) and AVS criteria when measured using chemiluminescent enzyme immunoassay (CLEIA). PAC of 415 adrenal venous blood samples from AVS (including segmental AVS) of 63 patients with primary aldosteronism was measured using RIA (Spac-S aldosterone kit; Fujirebio Inc.) and CLEIA (Lumipulse Presto Aldosterone; Fujirebio Inc.). PAC of 70 AVS samples was also measured using liquid chromatography-mass spectrometry (LC-MS/MS, ASKA Pharma Medical Co., Ltd.). PAC conversion formulas were determined for each AVS sample assay. PAC measured using CLEIA was significantly correlated with that measured using RIA (correlation coefficient = 0.971). The PAC conversion formula was PAC (CLEIA) = PAC (RIA) × 0.772 - 1,199 pg/mL. The PAC of 14,000 pg/mL in RIA was equivalent to 9,613 pg/mL in CLEIA. PAC measured using CLEIA was also correlated with that measured using LC-MS/MS, and the PAC conversion formula was PAC (CLEIA, pg/mL) = 0.97 × PAC (LC-MS/MS, pg/mL) + 211. The inter-assay coefficient of variability (CV) was 1.1-1.3% and intra-assay CV was 1.0-1.7%, measured using CLEIA. The PAC conversion formula for AVS samples was obtained using CLEIA and RIA, and the conversion formula was different from that for peripheral blood. PAC values measured by CLEIA showed preferable accuracy and high concordance with those measured by LC-MS/MS, even in AVS samples. The study outcomes are useful for interpreting AVS results using non-RIA measurement methods.
Language	English
Publishing date	2024-02-28
Publishing country	Japan
Document type	Journal Article
ZDB-ID	1151918-6
ISSN	1348-4540 ; 0918-8959
ISSN (online)	1348-4540
ISSN	0918-8959
DOI	10.1507/endocrj.EJ23-0695
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Article: A Rare Independent Left Inferior Phrenic Vein Sampling in a Left Adrenal Aldosterone-Producing Adenoma.

Tannai, Hiromitsu / Koike, Yuya / Matsui, Seishi / Saito, Jun / Makita, Kohzoh

Radiology case reports

2021 Volume 16, Issue 6, Page(s) 1443–1446

Abstract: This report presents a case of left adrenal aldosterone-producing adenoma (APA) diagnosed by segmental adrenal venous sampling in a patient with primary aldosteronism and a rare venous anomaly in which the left inferior phrenic vein (LIPV) and adrenal ... ...

Abstract	This report presents a case of left adrenal aldosterone-producing adenoma (APA) diagnosed by segmental adrenal venous sampling in a patient with primary aldosteronism and a rare venous anomaly in which the left inferior phrenic vein (LIPV) and adrenal central vein entered the left renal vein separately. The outflow of tumor blood into the LIPV and the specimen from the LIPV that showed much higher aldosterone level than that from the adrenal central vein and tributaries were useful for proving the aldosterone hypersecretion from the APA. Sampling from the LIPV could be of diagnostic value for left APA.
Language	English
Publishing date	2021-04-10
Publishing country	Netherlands
Document type	Case Reports
ZDB-ID	2406300-9
ISSN	1930-0433
ISSN	1930-0433
DOI	10.1016/j.radcr.2021.03.012
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Article ; Online: A rare case of solitary intradural osteoma arising in the pia mater of the thoracic spinal cord: a case report and review of the literature.

Shigekawa, Seiji / Matsui, Seishi / Inoue, Akihiro / Kurata, Mie / Kitazawa, Riko / Kunieda, Takeharu

Clinical neurology and neurosurgery

2022 Volume 214, Page(s) 107155

MeSH term(s)	Dura Mater ; Humans ; Magnetic Resonance Imaging ; Osteoma/diagnostic imaging ; Osteoma/surgery ; Pia Mater ; Spinal Cord/diagnostic imaging ; Spinal Cord/surgery ; Spinal Cord Neoplasms/diagnostic imaging ; Spinal Cord Neoplasms/surgery ; Thoracic Vertebrae/diagnostic imaging ; Thoracic Vertebrae/surgery
Language	English
Publishing date	2022-02-02
Publishing country	Netherlands
Document type	Case Reports ; Journal Article ; Review
ZDB-ID	193107-6
ISSN	1872-6968 ; 0303-8467
ISSN (online)	1872-6968
ISSN	0303-8467
DOI	10.1016/j.clineuro.2022.107155
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Article ; Online: Differences between left adrenal vein sampling sites revealed with segmental sampling in primary aldosteronism.

Tannai, Hiromitsu / Makita, Kohzoh / Nakai, Kazuki / Sato, Yuko / Tsurutani, Yuya / Saito, Jun / Matsui, Seishi / Nishikawa, Tetsuo

The British journal of radiology

2023 Volume 96, Issue 1151, Page(s) 20220766

Abstract: Objectives: To clarify the differences between two left sampling sites (left adrenal central vein [LCV] and common trunk [CMT], conjunction with LCV and inferior phrenic vein) and their impact on adrenal venous sampling (AVS) in primary aldosteronism by ...

Abstract	Objectives: To clarify the differences between two left sampling sites (left adrenal central vein [LCV] and common trunk [CMT], conjunction with LCV and inferior phrenic vein) and their impact on adrenal venous sampling (AVS) in primary aldosteronism by analyzing the results of segmental AVS (sAVS). Methods: We retrospectively analyzed a final cohort of 432 patients who underwent cosyntropin-stimulated sAVS from 2017 to 2020. Hormone levels in the LCV and the CMT were compared. Subtype diagnosis was based on the lateralization index with LCV and CMT sampling (a cutoff value of 4) and sAVS after excluding patients with a selectivity index (SI) <3. Results: Compared with the LCV, CMT sampling showed significantly lower aldosterone and cortisol levels and a higher proportion of cases with an SI of <3 (2.8% Conclusions: LCV sampling meets the SI criteria for successful AVS more frequently compared with CMT sampling, but neither was better than the other in terms of diagnosis under conditions of meeting the criteria. Advances in knowledge: LCV sampling would decrease the number of cases judged as AVS failure.
MeSH term(s)	Humans ; Aldosterone ; Hyperaldosteronism/diagnosis ; Hydrocortisone ; Retrospective Studies ; Veins ; Adrenal Glands/blood supply
Chemical Substances	Aldosterone (4964P6T9RB) ; Hydrocortisone (WI4X0X7BPJ)
Language	English
Publishing date	2023-10-11
Publishing country	England
Document type	Journal Article
ZDB-ID	2982-8
ISSN	1748-880X ; 0007-1285
ISSN (online)	1748-880X
ISSN	0007-1285
DOI	10.1259/bjr.20220766
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Article ; Online: A transnasal foreign body penetrating the spinal cord from the nasopharynx.

Takagi, Daiki / Shinohara, Naoki / Nishida, Naoya / Matsui, Seishi

Auris, nasus, larynx

2019 Volume 47, Issue 5, Page(s) 895–898

Abstract: Objective and importance: This is the first article regarding a transnasal Foreign bodies (FB) penetrating the spinal cord. We tried to remove it safely with a bilateral approach by performing a nasal endoscopy and partial laminectomy.: Clinical ... ...

Abstract	Objective and importance: This is the first article regarding a transnasal Foreign bodies (FB) penetrating the spinal cord. We tried to remove it safely with a bilateral approach by performing a nasal endoscopy and partial laminectomy. Clinical presentation: During logging work, a tree hit the occipital region of a 47-year-old man, producing unconsciousness with left paresis. Although he did not remember his injuries due to traumatic amnesia, a computed tomography (CT) scan showed a metal rod lodged from the left side wall of the nasopharynx to the spinal column at the cranial-cervical transition. Intervention: A C1 laminectomy, partial occipital bone resection, and endoscopic intranasal extirpation were done jointly by an otolaryngologist and neurosurgeon under general anesthesia to safely remove the FB. All procedures were performed in the right lateral decubitus position so we could approach both the nasopharynx and occipital sides. The otolaryngologist withdrew the FB from the nasal cavity using an endoscope while the neurosurgeon monitored the occipital bone side. The FB was safely removed. Conclusion: The site of penetration at the nasopharynx contracted gradually to a scar with no cerebrospinal fluid (CSF) leak. The patient was finally discharged 39 days after surgery with no motor/sensory paralysis.
MeSH term(s)	Accidents, Occupational ; Foreign Bodies/diagnostic imaging ; Foreign Bodies/surgery ; Humans ; Male ; Middle Aged ; Nasopharynx ; Spinal Cord/diagnostic imaging ; Spinal Cord Injuries/diagnostic imaging ; Spinal Cord Injuries/etiology ; Spinal Cord Injuries/surgery ; Tomography, X-Ray Computed ; Vertebral Artery/diagnostic imaging ; Vertebral Artery/injuries ; Wounds, Penetrating/diagnostic imaging ; Wounds, Penetrating/etiology ; Wounds, Penetrating/surgery
Language	English
Publishing date	2019-09-04
Publishing country	Netherlands
Document type	Case Reports ; Journal Article
ZDB-ID	604552-2
ISSN	1879-1476 ; 0385-8146
ISSN (online)	1879-1476
ISSN	0385-8146
DOI	10.1016/j.anl.2019.08.012
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Article ; Online: CT-Guided Percutaneous Needle Biopsy in Patients with Suspected Retroperitoneal Fibrosis: A Retrospective Cohort Study.

Koike, Yuya / Matsui, Seishi / Takase, Koichiro / Tannai, Hiromitsu

Cardiovascular and interventional radiology

2019 Volume 42, Issue 10, Page(s) 1434–1440

Abstract: Purpose: The outcome of CT-guided biopsy in patients with suspected retroperitoneal fibrosis (RF), regarded as technically challenging, remains unclear. This study aimed to evaluate the results of CT-guided biopsy in patients with lesions considered in ... ...

Abstract	Purpose: The outcome of CT-guided biopsy in patients with suspected retroperitoneal fibrosis (RF), regarded as technically challenging, remains unclear. This study aimed to evaluate the results of CT-guided biopsy in patients with lesions considered in the differential diagnosis of RF and compare them with results from patients with other retroperitoneal lesions. Materials and methods: Patients who underwent CT-guided biopsy of retroperitoneal lesions between January 2010 and September 2018 were retrospectively reviewed. The study cohort with retroperitoneal lesions surrounding the infra-abdominal aorta, iliac vessels, and/or ureters was divided into two groups: Group F included patients with lesions for which RF was considered in the differential diagnosis, and Group C comprised patients with a retroperitoneal mass or lymphadenopathy. Lesion size and depth, and biopsy details including technical success, position, procedure time, diagnostic yield, and complications between the two groups were compared. Results: Group F included 27 patients (mean age 68.5 years ± 11.6, 17 male) and Group C 30 patients (mean age 65.0 years ± 11.8, 16 male). The short axis was significantly smaller in Group F than in Group C (19 mm vs 26 mm, P = 0.041), and procedure time was significantly longer in Group F than in Group C (31.5 min ± 13.2 vs 20.3 min ± 8.4, P = 0.001). Technical success rate (93% vs 100%), accuracy (93% vs 93%), and complications (3.7% vs 10%) between Groups F and C were not significantly different. Conclusions: CT-guided biopsy of patients with suspected RF is considered safe and effective.
MeSH term(s)	Aged ; Cohort Studies ; Diagnosis, Differential ; Female ; Humans ; Image-Guided Biopsy/methods ; Male ; Radiography, Interventional/methods ; Retroperitoneal Fibrosis/diagnostic imaging ; Retroperitoneal Fibrosis/pathology ; Retroperitoneal Space/diagnostic imaging ; Retroperitoneal Space/pathology ; Retrospective Studies ; Tomography, X-Ray Computed/methods
Language	English
Publishing date	2019-06-18
Publishing country	United States
Document type	Journal Article
ZDB-ID	603082-8
ISSN	1432-086X ; 0342-7196 ; 0174-1551
ISSN (online)	1432-086X
ISSN	0342-7196 ; 0174-1551
DOI	10.1007/s00270-019-02266-x
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Article ; Online: Radiological characteristics and diagnostic impact of duplicated right adrenal veins on adrenal venous sampling in primary aldosteronism.

Tannai, Hiromitsu / Makita, Kohzoh / Matsui, Seishi / Koike, Yuya / Tsurutani, Yuya / Saito, Jun

Diagnostic and interventional radiology (Ankara, Turkey)

2021 Volume 27, Issue 6, Page(s) 754–761

Abstract: Purpose: We aimed to analyze the prevalence and radiological characteristics of duplicated right adrenal veins (DRAVs) and evaluate the diagnostic impact of adrenal venous sampling (AVS) in primary aldosteronism.: Methods: DRAVs were retrospectively ... ...

Abstract	Purpose: We aimed to analyze the prevalence and radiological characteristics of duplicated right adrenal veins (DRAVs) and evaluate the diagnostic impact of adrenal venous sampling (AVS) in primary aldosteronism. Methods: DRAVs were retrospectively identified among patients who underwent segmental AVS between April 2017 and March 2020. DRAVs were defined as main or accessory according to the drainage area. The diameter, position, hormone levels, and treatment plan based on AVS were compared between main and accessory RAVs, using the Wilcoxon rank-sum test. Results: Fourteen of 432 patients (3.2%) were diagnosed with DRAVs. On venography, the mean diameters of the main and accessory side were 3±0.63 mm and 2.1±0.41 mm, respectively, and were significantly different (p < 0.001). The mean relative position in craniocaudal direction of main and accessory veins from the adrenal caudal edge on computed tomography was 65.5%±16.0%, and 48.1%±16.8%, respectively, which was significantly different (p = 0.007). The left-right positions and hormone levels were not significantly different. Based on conventional AVS, the treatment plan between DRAVs was not changed in six of eight patients, but changed from surgery to medication in two patients with right aldosterone-producing adenoma (APA)/microadenoma based on segmental AVS findings. Conclusion: DRAVs, in which the main RAV was thicker and more cranially located than the accessory RAV were rare. Depending on blood sampled from either of DRAVs, the diagnosis made through conventional AVS might change treatment approach from surgery to medication, especially with right APA. Hence, their identification is important to make an accurate subtyping by AVS.
MeSH term(s)	Adrenal Glands/diagnostic imaging ; Adrenocortical Adenoma ; Aldosterone ; Humans ; Hyperaldosteronism/diagnostic imaging ; Retrospective Studies
Chemical Substances	Aldosterone (4964P6T9RB)
Language	English
Publishing date	2021-11-18
Publishing country	Turkey
Document type	Journal Article
ZDB-ID	2184145-7
ISSN	1305-3612 ; 1305-3612
ISSN (online)	1305-3612
ISSN	1305-3612
DOI	10.5152/dir.2021.21388
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Article ; Online: Anomalous Drainage of the Right Adrenal Vein into the Right Renal Vein: Radiological Findings and Adrenal Venous Sampling of Three Cases.

Tannai, Hiromitsu / Koike, Yuya / Matsui, Seishi / Nakai, Kazuki / Tsurutani, Yuya / Saito, Jun / Makita, Kohzoh

Journal of vascular and interventional radiology : JVIR

2021 Volume 33, Issue 2, Page(s) 209–212

MeSH term(s)	Adrenal Glands/blood supply ; Adrenal Glands/diagnostic imaging ; Drainage ; Humans ; Pulmonary Veins/abnormalities ; Renal Veins/diagnostic imaging ; Vena Cava, Inferior/abnormalities
Language	English
Publishing date	2021-10-26
Publishing country	United States
Document type	Letter
ZDB-ID	1137756-2
ISSN	1535-7732 ; 1051-0443
ISSN (online)	1535-7732
ISSN	1051-0443
DOI	10.1016/j.jvir.2021.10.012
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