Trigeminal Ganglion Metastasis of Renal Clear Cell Carcinoma: Cases Report and Review of the Literature

Clear-Cell Renal Cell Carcinoma Metastasis into Pterygomaxillary Fossa - A Case Report

Rationale

The aim of this study is to describe a rare case of clear-cell renal cell carcinoma (ccRCC) metastasis to the pterygomaxillary fossa.

Patient Concerns

A 54-year-old woman was referred to the Department of Otolaryngology due to right facial pain for the past six weeks.

Diagnosis

ccRCC metastasis to the pterygomaxillary fossa.

Treatment

The patient was treated by immunotherapy (Ipilimumab + Nivolumab) after multidisciplinary team evaluation.

Outcomes

After 18 months, the patient is in good overall condition and the size of the skull base lesion has significantly reduced.

Take-Away Lessons

ccRCC metastasis to the skull base and adjacent sites occur rarely. Most commonly, the presenting symptoms of these lesions are headache and diplopia for skull base metastases and epistaxis in case of sinusal involvement, according to the literature. When total resection of the metastasis is not feasible, tumour-targeted therapy may be used, as in the presented case. A multidisciplinary evaluation is recommended for the correct assessment and management of these patients.

Neoplastic nerve lesions

Though metastasis and malignant infiltration of the peripheral nervous system is relatively rare, physicians should have a familiarity with their presentations to allow for prompt diagnosis and initiation of treatment. This article will review the clinical presentations, diagnostic evaluation, and treatment of neoplastic involvement of the cranial nerves, nerve roots, peripheral nerves, and muscle. Due to the proximity of the neural structure traversing the skull base, metastasis to this region results in distinctive syndromes, most often associated with breast, lung, and prostate cancer. Metastatic involvement of the nerve roots is uncommon, apart from leptomeningeal carcinomatosis and bony metastasis with resultant nerve root damage, and is characterized by significant pain, weakness, and numbness of an extremity. Neoplasms may metastasize or infiltrate the brachial and lumbosacral plexuses resulting in progressive and painful sensory and motor deficits. Differentiating neoplastic involvement from radiation-induced injury is of paramount importance as it dictates treatment and prognosis. Neurolymphomatosis, due to malignant lymphocytic infiltration of the cranial nerves, nerve roots, plexuses, and peripheral nerves, deserves special attention given its myriad presentations, often mimicking acquired demyelinating neuropathies.

A most unusual diagnosis via an unusual route: tunneling through Meckel's cave

A 73-year-old woman presented with progressive symptoms of cranial nerve (V, VI, VIII) palsies, ataxia and gait disturbance due to a rapidly growing atypical trigeminocavernous mass. Percutaneous stereotactic transoval biopsy via Hartel's route revealed an exceedingly rare solitary trigeminal metastasis of a clear cell renal cell carcinoma, treated 16 years earlier without any other evidence of systemic disease. A minimally invasive, intra-operatively navigated approach is presented with detailed description of the stereotactic technique and technical considerations. The transoval biopsy expands the surgical repertoire for atypical Meckel cave lesions with diagnostic uncertainty. A frameless navigated technique should be state-of-the-art in contemporary neurosurgical practice.

Renal Cell Carcinoma Metastasis to Meckel's Cave Treated With Repeat Stereotactic Radiosurgery: A Case Report and Review of the Literature

Renal cell carcinoma (RCC) metastases to Meckel's cave (MC) are a rare condition. To the best of our knowledge, we present the first case of an RCC metastasis to MC successfully treated on two consecutive occasions with stereotactic radiosurgery (SRS). A 57-year-old man presented with new-onset facial pain and numbness. Magnetic resonance imaging (MRI) revealed a lesion invading MC. He was treated with Gamma Knife SRS successfully, resulting in both symptomatic improvement and radiologic tumour regression. Thirteen months after treatment, he presented with a recurrence of trigeminal nerve symptoms. He was treated with hypofractionated SRS successfully, with a follow-up MRI revealing resolution of the disease. While RCC metastases to MC are a rare phenomenon, published literature to date recommends surgical resection in combination with radiotherapy and systemic therapy. Metastatic disease to MC has only been treated once before with radiosurgery alone. Our case demonstrates that repeat SRS is feasible and efficacious. This approach may be favourable in patients wishing to avoid risks of surgical resection, or for those with unresectable disease. Metastases of RCC to MC are a rare occurrence and typically present with facial pain and/or hypoesthesia. This case demonstrates that repeat radiosurgery may be an effective alternative to surgical resection.

Palliative care: not only for treating symptoms: a case report

INTRODUCTION

Palliative care (PC) aims to treat symptoms independently of the disease. In many medical disciplines, including oncology, there is an emphasis on personalizing treatment, identifying the most effective therapeutic option by studying the genetic heritage of the patient and the molecular characteristics of the disease. PC, on the other hand, encompasses the overall (physical and spiritual) well-being of the patient and his or her caregivers. The increasing use of early PC and its integration with oncology could represent a fruitful collaboration among specialists.

CASE DESCRIPTION

We present the case of a 79-year-old woman with advanced breast cancer attending our institute who was referred to our PC Unit because of continuous ear pain, paresthesia around the mouth, strabismus, and facial dysesthesia. The patient was in good clinical condition (Eastern Cooperative Oncology Group 1) and was undergoing chemotherapy at the time. For these reasons, the PC physician carefully assessed the pain characteristics and differential diagnosis and discussed them with the oncologist, radiologist, and neurologist. Joint consultation led to a specific study of Meckel cave by MRI, revealing an extrameningeal gasserian ganglion metastasis, a very rare localization of breast cancer.

CONCLUSION

We present a case that underlines the importance of specialized PC assessment not limited to the control of symptoms. The search for the etiopathogenesis of a patient's symptoms and the evaluation of overall clinical conditions may be necessary to plan appropriate diagnostic evaluations, target palliative therapies, and achieve effective symptom control.