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Article ; Online: Cottonoids (neurosurgical patties, neurosurgical pads, or micropatties) as effective instruments for safe and successful endoscopic transsphenoidal adenomectomy.

Yoneoka, Yuichiro

2022 Volume 164, Issue 12, Page(s) 3303–3310

Abstract: Background: Neurosurgical cottonoids (also known as neurosurgical patties, pads, or micropatties) have been commonly used in microsurgical procedures to protect the surface of the brain, nerves, and vasculature and to aspirate blood, flushing solution, ... ...

Abstract	Background: Neurosurgical cottonoids (also known as neurosurgical patties, pads, or micropatties) have been commonly used in microsurgical procedures to protect the surface of the brain, nerves, and vasculature and to aspirate blood, flushing solution, and cerebrospinal fluid. This article describes the unique applications of cottonoids in endoscopic transsphenoidal adenomectomy (eTSA). Methods: Several sizes of cottonoids have been used in eTSA to enhance safe surgical procedures and clear the operative field. The roles of cottonoids in eTSA are divided into three types: to serve as view-ensuring devices, to protect tissue, and to function as instruments or assist with the use of other instruments. Results: Appropriate cottonoid use provides a well-visualized operative field, allows easy identification of bleeding areas, enables effective adenoma detachment from the cleavage layer (tumour-hypophysis interface), and permits sensitive procedures to be performed around critical structures. Conclusions: To achieve safe and successful neurovascular-hypophysis-protective eTSA, cottonoids play an effective role in every type of eTSA procedure, in various applications, performed under higher-resolution endoscopic vision.
MeSH term(s)	Humans ; Pituitary Neoplasms/surgery ; Neurosurgical Procedures/methods ; Treatment Outcome ; Endoscopy/methods ; Microsurgery/methods
Language	English
Publishing date	2022-10-20
Publishing country	Austria
Document type	Journal Article
ZDB-ID	80010-7
ISSN	0942-0940 ; 0001-6268
ISSN (online)	0942-0940
ISSN	0001-6268
DOI	10.1007/s00701-022-05394-5
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Article ; Online: Letter to the Editor Regarding "Spontaneous Regression in Intracranial Germinoma: Case Report and Literature Review".

Yoneoka, Yuichiro

World neurosurgery

2021 Volume 151, Page(s) 305

MeSH term(s)	Brain Neoplasms/diagnostic imaging ; Germinoma/diagnostic imaging ; Humans
Language	English
Publishing date	2021-02-12
Publishing country	United States
Document type	Letter ; Comment
ZDB-ID	2534351-8
ISSN	1878-8769 ; 1878-8750
ISSN (online)	1878-8769
ISSN	1878-8750
DOI	10.1016/j.wneu.2021.04.009
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Article: [Pituitary Hypertrophy].

Yoneoka, Yuichiro / Okada, Masayasu

No shinkei geka. Neurological surgery

2021 Volume 49, Issue 2, Page(s) 301–315

Abstract: Pituitary adenomas are the most common cause of sellar masses although there are a number of other neoplastic, infectious, inflammatory, developmental, and vascular etiologies that should be considered. Pregnancy promotes a physiological increase in the ... ...

Abstract	Pituitary adenomas are the most common cause of sellar masses although there are a number of other neoplastic, infectious, inflammatory, developmental, and vascular etiologies that should be considered. Pregnancy promotes a physiological increase in the size of the maternal pituitary gland, especially adenohypophysis. The normal maturation sequence of the pituitary gland apparently involves a period of physiological hypertrophy in teenagers. As most incidentalomas in pediatric patients are not associated with hormonal hypersecretion or hypopituitarism, and structural progression is not common, it is hypothesized that the extensive follow-up assessment recommended for adults might not be necessary for children. Patients presenting with a pituitary lesion should undergo a complete history and physical examination that includes evaluations for evidence of hypopituitarism and hormone hypersecretion syndrome. Patients with evidence for either of these conditions should undergo an appropriately directed biochemical evaluation. All patients presenting with a pituitary lesion abutting the optic nerves or chiasm on magnetic resonance imaging should undergo a formal visual field examination. Emergencies in pituitary disease can result from the failure of the pituitary gland to secrete one or more pituitary hormones or from neuro-ophthalmological symptoms due to the mass effect of an expanding hypothalamic-pituitary lesion. Early diagnosis and prompt treatment of endocrine emergencies are mandatory.
MeSH term(s)	Adenoma ; Adolescent ; Adult ; Child ; Humans ; Hypertrophy ; Hypopituitarism/diagnostic imaging ; Hypopituitarism/etiology ; Magnetic Resonance Imaging ; Pituitary Gland ; Pituitary Neoplasms/diagnostic imaging
Language	Japanese
Publishing date	2021-03-24
Publishing country	Japan
Document type	Journal Article
ZDB-ID	197053-7
ISSN	1882-1251 ; 0301-2603
ISSN (online)	1882-1251
ISSN	0301-2603
DOI	10.11477/mf.1436204392
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Article: "Vascular" Korsakoff Syndrome With Bilaterally Damaged Mammillothalamic Tracts: Insights Into the Pathogenesis of "Acute" Korsakoff Syndrome As Acute-Onset Irreversible Anterograde Amnesia.

Yoneoka, Yuichiro / Seki, Yasuhiro / Akiyama, Katsuhiko

Cureus

2021 Volume 13, Issue 11, Page(s) e19472

Abstract: The structural pathogenesis of Wernicke-Korsakoff syndrome remains debatable. Wernicke encephalopathy is acute and often reversible whereas Korsakoff syndrome (KS) is chronic and may be irreversible. The cognitive deficits observed in KS are considered ... ...

Abstract	The structural pathogenesis of Wernicke-Korsakoff syndrome remains debatable. Wernicke encephalopathy is acute and often reversible whereas Korsakoff syndrome (KS) is chronic and may be irreversible. The cognitive deficits observed in KS are considered to be primarily due to damage to the anterior nucleus of the thalamus, mammillary bodies, and corpus callosum. We present an extremely rare case of non-alcoholic "vascular" KS (vKS) as acute-onset amnesia. A 97-year-old man living alone was brought to our hospital, complaining of sudden-onset behavioral changes with amnesia. Diffusion-weighted images (DWIs) showed fresh cerebral infarction in the right thalamus involving the right mammillothalamic tract (MTT). T2-weighted images (T2WIs), in addition, revealed a microbleed scar over the left MTT. This case supports the hypothesis that bilateral MTT dysfunction can lead to KS. Furthermore, in collaboration with a prior report about non-alcoholic "acute" KS due to cerebral infarction, this case supports the existence of vascular KS as an acute-onset amnestic syndrome, as well as insight into the pathogenesis of KS as an irreversible amnestic syndrome.
Language	English
Publishing date	2021-11-11
Publishing country	United States
Document type	Case Reports
ZDB-ID	2747273-5
ISSN	2168-8184
ISSN	2168-8184
DOI	10.7759/cureus.19472
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Article ; Online: A 75-Year-Old Woman with a 5-Year History of Controlled Type 2 Diabetes Mellitus Presenting with Polydipsia and Polyuria and a Diagnosis of Central Diabetes Insipidus.

Ohara, Nobumasa / Takada, Toshinori / Seki, Yasuhiro / Akiyama, Katsuhiko / Yoneoka, Yuichiro

The American journal of case reports

2022 Volume 23, Page(s) e938482

Abstract: BACKGROUND Central diabetes insipidus (CDI) is a rare disorder characterized by large volumes of dilute urine because of a lack of antidiuretic hormone. Co-existing CDI and diabetes mellitus without inherited disorders such as Wolfram syndrome are rare. ... ...

Abstract	BACKGROUND Central diabetes insipidus (CDI) is a rare disorder characterized by large volumes of dilute urine because of a lack of antidiuretic hormone. Co-existing CDI and diabetes mellitus without inherited disorders such as Wolfram syndrome are rare. It is both important and challenging to diagnose this combination because the 2 conditions present with thirst, polydipsia, and polyuria. A few cases of CDI developing in patients with type 2 diabetes mellitus (T2D) have been reported. We report an unusual case of CDI that developed in an older patient with T2D. The aims of this report are to share the clinical course and discuss clues to the early diagnosis of CDI in T2D. CASE REPORT A 70-year-old Japanese woman developed T2D with hyperglycemia symptoms, including thirst, polydipsia, and polyuria. After starting medical treatment, the hyperglycemia and its symptoms improved. The glycated hemoglobin level decreased from 9% to 6%. However, 5 years later (at 75 years of age), she re-exhibited thirst, polydipsia, and polyuria despite stable glycemic control. Her urine volume was large (6.3 L/day). A urine glucose test was negative. The plasma osmolality was high (321 mOsm/kg), while the urinary osmolality was low (125 mOsm/kg). A significant increase in urinary osmolality following vasopressin administration indicated a diagnosis of CDI. Desmopressin therapy effectively relieved the symptoms. CONCLUSIONS This case highlights the need to consider CDI as a rare but important comorbid disorder in patients with diabetes mellitus, including T2D, particularly those presenting with thirst, polydipsia, and polyuria despite well-controlled glycemia.
MeSH term(s)	Female ; Humans ; Aged ; Diabetes Insipidus, Neurogenic/diagnosis ; Diabetes Insipidus, Neurogenic/etiology ; Polyuria/diagnosis ; Polyuria/etiology ; Polyuria/drug therapy ; Diabetes Mellitus, Type 2/complications ; Polydipsia/diagnosis ; Polydipsia/etiology ; Hyperglycemia/complications
Language	English
Publishing date	2022-12-31
Publishing country	United States
Document type	Case Reports ; Journal Article
ZDB-ID	2517183-5
ISSN	1941-5923 ; 1941-5923
ISSN (online)	1941-5923
ISSN	1941-5923
DOI	10.12659/AJCR.938482
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Calvarium Subperiosteal Hematoma in a 12-Year-Old Boy.

Yoneoka, Yuichiro / Seki, Yasuhiro / Akiyama, Katsuhiko

Cureus

2021 Volume 13, Issue 7, Page(s) e16550

Abstract: Calvarium subperiosteal hematoma (C-SPOH) is extremely rare in juveniles. We present an extremely rare case of juvenile C-SPOH and a review of the literature. A 12-year-old boy hit his head hard against another player's head during a soccer game. On the ... ...

Abstract	Calvarium subperiosteal hematoma (C-SPOH) is extremely rare in juveniles. We present an extremely rare case of juvenile C-SPOH and a review of the literature. A 12-year-old boy hit his head hard against another player's head during a soccer game. On the next day of the game (Day 02), he noticed a soft bump on the left parietal region. On Day 04, he saw a local physician and was diagnosed with a subgaleal hematoma. The hematoma grew larger, up to twice the size of that on Day 04 and it became more painful over the next five days. A CT scan on Day 10 showed a subcutaneous hematoma that did not cross the suture lines. Aspiration using a syringe with an 18-gauge needle obtained about 45 mL liquefied hematoma and caused the bump collapse with relief of the pain. On Day 12, however, he presented the same bump with similar pains as on Day 10. CT angiography revealed no vascular anomalies or disruptions. A blood sampling test demonstrated normal blood coagulation ability without thrombocytopenia or malnutrition. A second aspiration obtained 45 mL liquefied hematoma. In the second procedure, the hematoma cavity was irrigated with normal saline solution (about 5 mL x 4). He took 250 mg tranexamic acid three times a day and 5 mg prednisolone three times a day for four days. On Day 15, his C-SPOH was not tense and not painful. On Day 22, the periosteal hematoma remained soft and shrunk. A follow-up CT scan showed the complete disappearance of the subperiosteal hematoma on Day 57. The boy has returned to soccer-playing activity without sequelae. This case suggests that 1) C-SPOH can be found in healthy juveniles; 2) Neovascularization along the wall of the C-SPOH cavity may contribute to the formation of the C-SPOH; 3) A simple aspiration of the liquefied SPOH may fail to cure it in juveniles.
Language	English
Publishing date	2021-07-22
Publishing country	United States
Document type	Case Reports
ZDB-ID	2747273-5
ISSN	2168-8184
ISSN	2168-8184
DOI	10.7759/cureus.16550
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Glass Fragment Injury to the Craniocervical Junction with Interatlantooccipital Penetration to the Subarachnoid Space: Not-To-Be-Missed Important Aspects of Craniocervical Trauma Even in the Middle of the COVID-19 Pandemic: Case Report and Review of Literature.

Yoneoka, Yuichiro / Akiyama, Katsuhiko / Seki, Yasuhiro

World neurosurgery

2020 Volume 141, Page(s) 402–405

Abstract: Background: Nonmissile penetrating injuries to the craniocervical junction caused by a glass fragment are rare, and a standard management strategy has not been established.: Case description: A 75-year-old Japanese man was brought into our emergency ... ...

Abstract	Background: Nonmissile penetrating injuries to the craniocervical junction caused by a glass fragment are rare, and a standard management strategy has not been established. Case description: A 75-year-old Japanese man was brought into our emergency department after receiving a left retroauricular stab wound by broken glass fragments. After spinal immobilization, a computed tomography (CT) scan revealed glass fragments penetrating at the right craniocervical junction to the interatlantooccipital subarachnoid space. CT angiography showed that both vertebral arteries were not injured. Magnetic resonance imaging demonstrated that the glass fragments did not penetrate the cervical cord or medulla oblongata. These glass fragments were removed via a midline incision from the external occipital protuberance to the C7 and with laminectomy without suboccipital craniectomy. Five of the glass fragments were found and removed in total. The dural defect was patched with a free fascia autograft. His postoperative course was uneventful. Postoperative CT angiography showed that both vertebral arteries were intact and the glass fragments had been removed completely. Conclusions: CT graphical diagnosis is useful for the management of penetrating craniocervical junction trauma, and it should be considered in the evaluation of patients who have suffered craniocervical penetrating injury even in the absence of major wounds or bleeding. Spinal immobilization of patients with craniocervical penetrating injuries is crucial to avoid not only secondary neurologic damage but also secondary critical vascular damage. Incomplete or inadequate assessment of craniocervical stab wounds results in unexpected hazards that are preventable.
MeSH term(s)	Aged ; Atlanto-Occipital Joint/diagnostic imaging ; Atlanto-Occipital Joint/injuries ; COVID-19 ; Coronavirus Infections ; Glass ; Humans ; Magnetic Resonance Imaging ; Male ; Pandemics ; Pneumonia, Viral ; Subarachnoid Space/diagnostic imaging ; Subarachnoid Space/injuries ; Tomography, X-Ray Computed ; Trauma, Nervous System/complications ; Trauma, Nervous System/diagnostic imaging ; Trauma, Nervous System/surgery ; Wounds, Penetrating/complications ; Wounds, Penetrating/surgery ; Wounds, Stab/therapy
Keywords	covid19
Language	English
Publishing date	2020-06-16
Publishing country	United States
Document type	Case Reports
ZDB-ID	2534351-8
ISSN	1878-8769 ; 1878-8750
ISSN (online)	1878-8769
ISSN	1878-8750
DOI	10.1016/j.wneu.2020.06.065
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Article ; Online: An 81-Year-Old Man Presenting with Asthenia and Anorexia After an Alcohol-Induced Hypoglycemic Coma and a Diagnosis of Central Adrenal Insufficiency: A Case Report.

Ohara, Nobumasa / Hirota, Naoko / Takada, Toshinori / Tani, Takashi / Terajima, Kenshi / Ozawa, Tetsutaro / Seki, Yasuhiro / Akiyama, Katsuhiko / Yoneoka, Yuichiro

The American journal of case reports

2023 Volume 24, Page(s) e939840

Abstract: BACKGROUND Alcohol abuse inhibits the ability of the liver to release glucose into the bloodstream, primarily by inhibiting gluconeogenesis, so chronic alcohol abusers exhibit hypoglycemia after drinking alcohol without eating; this is called alcohol- ... ...

Abstract	BACKGROUND Alcohol abuse inhibits the ability of the liver to release glucose into the bloodstream, primarily by inhibiting gluconeogenesis, so chronic alcohol abusers exhibit hypoglycemia after drinking alcohol without eating; this is called alcohol-induced hypoglycemia. Central adrenal insufficiency (AI) is characterized by cortisol deficiency due to a lack of adrenocorticotropic hormone. It is challenging to diagnose central AI, as it usually presents with nonspecific symptoms, such as asthenia, anorexia, and a tendency toward hypoglycemia. Here, we report a rare case of central AI that presented with AI symptoms shortly after an alcohol-induced hypoglycemic coma. CASE REPORT An 81-year-old Japanese man who had been a moderate drinker for >40 years developed a hypoglycemic coma after consuming a large amount of sake (alcohol, 80 g) without eating. After the hypoglycemia was treated with a glucose infusion, he rapidly recovered consciousness. After stopping alcohol consumption and following a balanced diet, he had normal plasma glucose levels. However, 1 week later, he developed asthenia and anorexia. The endocrinological investigation results indicated central AI. He was started on oral hydrocortisone (15 mg/day), which relieved his AI symptoms. CONCLUSIONS Cases of central AI associated with alcohol-induced hypoglycemic attacks have been reported. Our patient developed AI symptoms following an alcohol-induced hypoglycemic attack. His alcohol-induced hypoglycemic attack likely occurred in combination with a developing cortisol deficiency. This case highlights the importance of considering central AI in chronic alcohol abusers presenting with nonspecific symptoms, including asthenia and anorexia, especially when patients have previously experienced alcohol-induced hypoglycemic attacks.
MeSH term(s)	Male ; Humans ; Aged, 80 and over ; Hydrocortisone/therapeutic use ; Anorexia/etiology ; Asthenia/complications ; Coma/chemically induced ; Coma/complications ; Hypoglycemia/chemically induced ; Hypoglycemia/diagnosis ; Adrenal Insufficiency/chemically induced ; Adrenal Insufficiency/diagnosis ; Glucose ; Ethanol ; Hypoglycemic Agents
Chemical Substances	Hydrocortisone (WI4X0X7BPJ) ; Glucose (IY9XDZ35W2) ; Ethanol (3K9958V90M) ; Hypoglycemic Agents
Language	English
Publishing date	2023-07-03
Publishing country	United States
Document type	Case Reports ; Journal Article
ZDB-ID	2517183-5
ISSN	1941-5923 ; 1941-5923
ISSN (online)	1941-5923
ISSN	1941-5923
DOI	10.12659/AJCR.939840
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Article: Prolonged Postoperative Pyrexia and Transient Nonnephrogenic Vasopressin-Analogue-Resistant Polyuria following Endoscopic Transsphenoidal Resection of an Infundibular Epidermoid Cyst.

Yoneoka, Yuichiro / Seki, Yasuhiro / Akiyama, Katsuhiko / Sakurai, Yuki / Ohara, Nobumasa / Hasegawa, Go

Case reports in neurological medicine

2021 Volume 2021, Page(s) 6690372

Abstract: Prolonged postoperative pyrexia (PPP) due to Mollaret's meningitis following endoscopic transsphenoidal surgery (eTSS) for an intracranial epidermoid cyst can be confused with postoperative meningeal infection after transsphenoidal resection, especially ... ...

Abstract	Prolonged postoperative pyrexia (PPP) due to Mollaret's meningitis following endoscopic transsphenoidal surgery (eTSS) for an intracranial epidermoid cyst can be confused with postoperative meningeal infection after transsphenoidal resection, especially in the middle of the COVID-19 pandemic. Anosmia, as well as dysgeusia, cannot be evaluated in patients of eTSS for a while after surgery. We report a case of an infundibular epidermoid cyst with post-eTSS Mollaret's meningitis (MM). The post-eTSS MM caused vasopressin-analogue-resistant polyuria (VARP) in synchronization with PPP. A 59-year-old man experiencing recurrent headaches and irregular bitemporal hemianopsia over three months was diagnosed with a suprasellar tumor. The suprasellar tumor was an infundibular cyst from the infundibular recess to the posterior lobe of the pituitary, which was gross-totally resected including the neurohypophysis via an extended eTSS. Since awakening from general anesthesia after the gross total resection (GTR) of the tumor, the patient continuously had suffered from headache until the 13
Language	English
Publishing date	2021-04-13
Publishing country	United States
Document type	Case Reports
ZDB-ID	2629909-4
ISSN	2090-6676 ; 2090-6668
ISSN (online)	2090-6676
ISSN	2090-6668
DOI	10.1155/2021/6690372
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Article ; Online: Glass Fragment Injury to the Craniocervical Junction with Interatlantooccipital Penetration to the Subarachnoid Space

Yoneoka, Yuichiro / Akiyama, Katsuhiko / Seki, Yasuhiro

World Neurosurgery

Not-To-Be-Missed Important Aspects of Craniocervical Trauma Even in the Middle of the COVID-19 Pandemic: Case Report and Review of Literature

2020 Volume 141, Page(s) 402–405

Keywords	Surgery ; Clinical Neurology ; covid19
Language	English
Publisher	Elsevier BV
Publishing country	us
Document type	Article ; Online
ZDB-ID	2534351-8
ISSN	1878-8769 ; 1878-8750
ISSN (online)	1878-8769
ISSN	1878-8750
DOI	10.1016/j.wneu.2020.06.065
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