Orthostatic tremor secondary to primary malignant melanoma of the spinal cord: A case report

Abstract

Background and purpose Orthostatic tremor and spinal cord melanoma are rare entities and seem unlikely to be associated. Herein, we report a patient diagnosed with orthostatic tremor secondary to primary malignant melanoma of the spinal cord. Case Presentation We report the case of a 67‐year‐old man who experienced tremor when he was standing, which disappeared when he was sitting or walking. He also reported gait disturbance and cognitive dysfunction. Electromyography revealed a regular and symmetric high‐frequency tremor in the lower extremities. The patient was admitted to a hospital several times and was diagnosed with primary orthostatic tremor and later hydrocephalus; thus, he received a ventriculoperitoneal shunt. Finally, he showed symptoms of the presence of melanoma in the spinal cord, which was supported by spinal cord magnetic resonance imaging findings. Primary malignant melanoma of the spinal cord was confirmed postoperatively. Conclusions Orthostatic tremor is a rare entity that can be characterized by specific high‐frequency tremors when the subject is standing. Considering that it remains unknown why this condition appears, some possible associations, such as primary spinal cord melanoma, should be considered. Thus, a comprehensive assessment of these types of patients is required. Our case report may facilitate the understanding of the pathophysiology and clinical symptoms of this disease.

[Retracted] Value of CSF‐Cl, CSF‐GS, CSF‐MALB, and CSF‐ADA in Differential Diagnosis of Secondary Hydrocephalus

“…Secondary hydrocephalus is a common critical disease in neurosurgery. It often has the characteristics of acute onset, rapid progress, many complications, and high disability rate [ 1 ]. If the treatment is not timely, it may lead to lifelong disability, leaving irreversible damage, and even endanger the life and health of patients [ 2 , 3 ].…”