Giant prolactinoma with progressive cranial settling and central herniation: a case report.

Background: Giant prolactinoma (size > 4 cm) is a rare condition and accounts for less than 1% of pituitary adenomas. In even rarer cases, these lesions may involve craniocervical structures requiring surgical intervention. The present case is the largest reported giant prolactinoma (99 × 72 × 57 mm).

Role of copy number variation analysis in prenatally diagnosed Blake's pouch cyst.

Background: Blake's pouch cyst (BPC) is a midline cystic anomaly of the posterior fossa. BPC has been shown to have a risk of aneuploidy prenatally. Copy number variation (CNV) and/or genetic syndromes have been reported in a few prenatal/postnatal cases with BPC.

An intracranial odyssey: pediatric ganglioneuroma arising from the trigeminal ganglion: a case report and review of the literature.

Background: Ganglioneuroma represents an uncommon benign tumor arising from the sympathetic nerves, and its development from the fifth nerve is an infrequent entity. Few ganglioneuromas arising from the fifth nerve have been discussed in literature. The authors describe the second pediatric ganglioneuroma arising from the fifth nerve.

Endoscopic Suturing of Skull Base Dura and its Effectiveness in Preventing CSF Leak.

Proper skull base repair is essential in preventing postoperative cerebrospinal fluid (CSF) leak following endonasal endoscopic skull base surgery. Direct suturing of the skull base dura is desirable but difficult. Here, we discuss the effectiveness of endoscopic suturing of skull base dura in cases of skull base lesions with intraoperative CSF leak.

Advancements in Molecular Diagnosis and Pharmacotherapeutic Strategies for Invasive Pituitary Adenomas.

Background: The overwhelming majority of pituitary tumors consist of pituitary adenomas (PAs), which have recently also been termed pituitary neuroendocrine tumors (PitNETs). Clinically significant PAs occur in approximately one in every 1000 individuals, while other types of pituitary tumors, such as craniopharyngiomas and pituicytomas, are significantly less common. Although PAs are generally benign, a subset of them exhibits malignant-like biological traits.

Characterization of Somatostatin Receptor 2 Gene Expression and Immune Landscape in Sinonasal Malignancies.

Olfactory neuroblastoma (ONB), sinonasal undifferentiated carcinoma (SNUC), and sinonasal neuroendocrine carcinoma (SNEC) are rare malignancies arising from the sinonasal tract with limited therapeutic options. The expression of the somatostatin receptor 2 gene (), which is expressed in other neuroendocrine neoplasms and is therapeutically actionable, has been reported in these tumors. Here, we analyzed gene expression and its associations with genomic features, established biomarkers predicting of immune response, and the tumor immune microenvironment in a cohort of ONB, SNUC, and SNEC tumor samples (26, 13, and 8 samples, respectively) from a real-world database.

Cochlear Implantation With Sporadic Inner Ear Schwannomas: Outcomes in 106 Patients From an International Multi-Institutional Study.

Objective: To evaluate cochlear implant speech perception among patients with sporadic inner ear schwannoma who underwent ipsilateral implantation.

Study Design: Retrospective multi-institutional cohort study.

Setting: Eleven tertiary academic medical centers across Germany, Denmark, and the United States.

Preoperative Quality of Life in Patients with Small Vestibular Schwannomas.

Background: Vestibular schwannomas (VS) are benign tumors arising from the eighth cranial nerve. They often cause no symptoms for a long period of time. Due to the improved availability and quality of magnetic resonance imaging diagnostics, even small tumors can be diagnosed at an early stage.

Proton beam and carbon ion radiotherapy in skull base chordoma: a systematic review, meta-analysis and meta-regression with trial sequential analysis.

Chordomas are rare, locally aggressive tumors that have a high rate of recurrence, especially at the skull base. This systematic review and meta-analysis aimed to analyze the efficacy and safety of proton beam therapy (PBT) and carbon ion radiotherapy (CIRT) for skull base chordoma. We conducted a systematic search of MEDLINE, EMBASE, CENTRAL, Web of Science, and Ovid up to November 26, 2023, following the PRISMA statement.

Impact of GRM7 gene variations on glioblastoma risk in the Iranian population.

Aim: The metabotropic glutamate receptor, GRM7 is a gene in the neurotransmitters prognostic signatures. Downregulation of this gene is associated with the progression of glioma tumors and has a negative impact on the immune response.

Methods: In the present study, we aim to assess the associations between rs6782011 and rs779867 SNPs within this gene and risk of glioblastoma multiforme (GBM) in Iranian population.

How I do it: far-lateral approach using a linear incision.

Background: The far-lateral approach, frequently employed by skull base surgeons, targets lesions in the ventrolateral region of the craniovertebral junction (CVJ). Although various incisions can be utilized, the linear incision is notably less invasive and more efficient. Despite its advantages, the literature lacks a comprehensive description of the technical steps involved in this approach.

External auditory canal osteoma with coexisting canal wall cholesteatoma: a case report and review of literature.

Background: Though rare, benign lesions that usually do not necessitate active intervention, osteomas of the external auditory canal, can be troublesome when they start to produce mass effect and severe obstruction to the external auditory canal. Even more insidious is the rarer phenomenon of canal wall cholesteatomas, which have been known to cause significant canal erosion and if left unchecked and spontaneous destruction of the adjacent anatomical structures, including the facial nerve, temporomandibular joint, sigmoid sinus, and skull base. The occurrence of both these exceptionally uncommon findings in the same canal is an unusual finding and may point to an undetermined interplay in pathogenesis.

[Repair protocol of intraoperative CSF leak after endoscopic endonasal clival malignancy resection].

To evaluate the repair protocols for intraoperative cerebrospinal fluid (CSF) leaks after endoscopic endonasal clival malignancy resection (EECR) and to analyze the risk factors of surgical complication. The clinical data of patients who underwent EECR and had intraoperative CSF leaks in XuanWu Hospital, Capital Medical University between January 2012 and January 2024 were reviewed. The pathological results, imaging data, location of the dural defect, degree of intraoperative CSF leaks, repair materials, complications such as postoperative central nervous system (CNS) infections, types of antibiotics used, bacterial culture and drug sensitivity results, secondary repair, and follow-up results were collected.

[Clinical analysis of endoscopic transnasal resection of skull base chondrosarcoma].

To explore the surgical techniques and clinical outcomes of endoscopic transnasal approaches in the treatment of skull base chondrosarcomas. Data from patients diagnosed with skull base chondrosarcomas and treated via endoscopic transnasal surgery at the Department of Otorhinolaryngology and Head and Neck Surgery, Xuanwu Hospital, Capital Medical University, from 2013 to 2022 were collected. This retrospective study analyzed the patients' clinical presentations, histopathological grading, involved sites and extents, and complications following the endoscopic transnasal surgery.

Carotid Complications in Skull Base Surgery.

Carotid artery rupture is a worrisome complication that sometimes occurs during microsurgical or endoscopic skull base procedures. Many identifiable aspects are related to prevention, intraoperative management, and immediate postoperative endovascular treatment. This article deals with microsurgical and endoscopic cases in which the carotid artery or its branches have been damaged in the context of a resection of skull base lesions.

The novel developed and validated multiparametric MRI-based fusion radiomic and clinicoradiomic models predict the postoperative progression of primary skull base chordoma.

Local progression of primary skull base chordoma (PSBC) is a sign of treatment failure. Predicting the postoperative progression of PSBC can aid in the development of individualized treatment plans to improve patients' progression-free survival (PFS) after surgery. This study aimed to develop a multiparametric MRI-based fusion radiomic model (FRM) and clinicoradiomic model (CRM) via radiomic and clinical analysis and to explore their validity in predicting postoperative progression in PSBC patients before surgery.

Skull base reconstruction using hydroxyapatite and nasoseptal flap versus nasoseptal flap alone: meta-analysis and systematic review.

Endoscopic endonasal surgery (EES) is widely employed for interventions in skull base. Despite advancements in surgical techniques, cerebrospinal fluid (CSF) leakage remains a significant concern. The introduction of nasoseptal flap (NSF) dramatically reduced the CSF leakage rates, yet reconstruction techniques continue to vary among institutions and lack standardization.

Virtual reality for patient informed consent in skull base tumors and intracranial vascular pathologies: A pilot study.

Purpose: With the growing demand for shared decision-making and patient-centered care, optimal informed consent (IC) has gained relevance. Virtual reality (VR) has seen significant technological advancements, and its medical applications currently include surgical planning and medical education. This pilot study investigates the feasibility of VR-enhanced informed consent (VR-IC) in neurosurgery to improve preoperative IC and patient satisfaction.