Introduction: Temporal bone paragangliomas are rare tumors with high vascularization and usually benign entity. A variety of modalities, including gross total resection, subtotal resection, conventional or stereotactic radiotherapy including gamma-knife, embolization, and wait-and-scan strategy can be considered. The aim of this study was to compare long-term outcomes of different primary treatment modalities in temporal bone paragangliomas. Materials and Methods: Patients with temporal bone paragangliomas treated between 1976 and 2018 at a tertiary referral center were retrospectively analyzed in this study. Collected patient data of 42 years were analyzed and long-term results including interdisciplinary management were assessed. Patient outcomes were compared within the different therapy modalities according to tumor control rate and complications. Clinical characteristics, radiological imaging, tumor extent and location (according to Fisch classification), symptoms, and follow-up were evaluated and a descriptive analysis for each treatment modality was performed. Tumor recurrence or growth progression and respective cranial nerve function before and after therapy were described. Results: A total of 59 patients were treated with a single or combined treatment modality and clinical follow-up was 7 (13) years (median, interquartile range). Of the included patients 45 (76%) were female and 14 (24%) male (ratio 3:1) with a patient age range from 18 to 83 years. Total resection was performed on 31 patients, while 14 patients underwent subtotal resection. Eleven patients were treated with conventional primary radiotherapy or gamma-knife radiosurgery. Pulsatile tinnitus (n = 17, 29%) and hearing impairment (n = 16, 27%) were the most common symptoms in our patient group. Permanent lower cranial nerve deficits were observed only in patients with large tumors (Fisch C and D, n = 14, 24%). Among the 45 patients who were treated surgically, 88% of patients with Fisch A and B paragangliomas had no recurrent disease, while no tumor growth was perceived in 83% of patients with Fisch C and D paragangliomas. Conclusion: In conclusion, we propose surgery as a treatment option for patients with small tumors, due to a high control rate and less cranial nerve deficits compared to larger tumors. Although patients with Fisch C and D temporal bone paraganglioma can be treated surgically, only subtotal resections are possible in many cases. Additionally, frequent occurrence of cranial nerve deficits in those patients and tumor growth progression in long-term follow-up examinations make a combination of the therapy modalities or a primary radiotherapy more suitable in larger tumors.

Intratympanically applied treatments are of increasing interest to the otologic community to treat sudden sensorineural hearing loss or vestibular disorders but also to deliver gene therapy agents, or biologics to the inner ear. Further diversion from the middle ear and perilymph to blood circulation and cerebrospinal fluid via the cochlear aqueduct are one of the limiting factors and so far not understood well enough. In this study, intratympanically applied triamcinolone acetonide was determined in cerebrospinal fluid. Additionally, perilymph was sampled through the round window membrane as well as at the lateral semicircular canal to determine drug levels. Of the twenty-one included patients, triamcinolone acetonide was quantifiable in cerebrospinal fluid in 43% at very low levels (range 0 ng/ml-6.2 ng/ml) which did not correlate with perilymph levels. Drug levels at the two different perilymph sampling sites were within a range of 13.5 ng/ml to 1180.0 ng/ml. Results suggest an equal distribution of triamcinolone acetonide to semicircular canals, which might support the use of triamcinolone acetonide as a treatment option for vestibular pathologies such as Menièrés disease. On the other hand, the distribution to cerebrospinal fluid might be limiting current approaches in gene therapy where a central distribution is unwanted.

Zusammenfassung: Vestibularisschwannome können die Lebensqualität von Patienten stark beeinträchtigen. Neben einer eingeschränkten Hörfunktion wird die Gesichtslähmung hierbei als besonders störend empfunden. Unterschiedliche Wachstumsraten dieser gutartigen Tumore erschweren die zeitliche Vorhersage einer funktionellen Beeinträchtigung von Hirnnerven. Deshalb ist ein regelmäßiges Update zu aktuellen Therapiestrategien und alternative Behandlungsmöglichkeiten sowohl für Ärzte als auch Patienten relevant.

Traumatic iatrogenic perforation of the anterior skull base is a rare complication following endonasal intubation in preterm infants. Subsequent meningoencephaloceles with concomitant cerebrospinal fluid (CSF) fistulas bear the risk of severe complications, therefore early diagnosis and closure of the skull defect are crucial. However, there is no consensus on the management of such cases of meningoencephaloceles. This case report presents a sophisticated approach of open brain surgery in combination with endonasal endoscopy. A 15-month-old girl presented with a meningoencephalocele and a CSF fistula due to iatrogenic perforation of the left anterior skull base during attempted endonasal intubation after birth. Difficult nasal breathing and an increasing diameter of the skull base defect on imaging controls indicated surgical management. Close multidisciplinary collaboration was essential for diagnosis and decision upon treatment. Open neurosurgical resection and CSF fistula closure combined with endonasal endoscopic removal of the excised meningoencephalocele was performed. Our case report shows that this combined open surgical and endonasal endoscopic approach is a safe procedure in favor of the postoperative outcome and follow-up of the patient.

Objective: Excessively prescribed opioids promote chronic drug abuse and worsen a highly prevalent public health problem in the era of the opioid epidemic. This study aimed to (a) determine general analgesic prescription patterns after surgery for vestibular schwannoma (VS) with a focus on opioid prescription rates, (b) identify risk factors for receiving narcotics for postoperative pain management, and (c) highlight the feasibility of opioid-free analgesic treatment strategies. Study Design: Retrospective chart review. Setting: Tertiary referral center. Patients: A total of 105 adult inpatients who underwent VS surgery. Interventions: Analgesic prescription patterns were evaluated, and factors associated with opioid prescriptions were identified. Main outcome measure: Number of prescribed analgesics. Results: Metamizole (=dipyrone) and acetaminophen (=paracetamol) were the most frequently prescribed non-opioid drugs. Sixty-three (60%) patients received an opioid with a median intake of 23.2 ± 24 mg of oral morphine equivalents. Only 10 (9.5%) individuals received opioids for longer than postoperative day 1. Subjects with small tumors undergoing middle cranial fossa tumor removal (p = 0.007) were more likely to receive opioid drugs. In contrast, patients undergoing retrosigmoid craniotomy required fewer opioids for pain control (p = 0.004). Furthermore, individuals receiving opioids were prone to obtain higher dosages of acetaminophen (odds ratio 1.054, 95% confidence interval 1.01–1.10, p = 0.022). Conclusions: Opioids for acute postoperative analgesia after VS surgery may be necessary in many patients. However, middle- and long-term pain control can be accomplished using non-opioid treatment regimens, resulting in a reduction in opioid prescriptions and the accompanying negative effects on individual and public health.