What are the clinical manifestations of medullary tumors? There are many obvious symptoms

The medulla oblongata is a brain center with cardiovascular and respiratory centers. The clinical symptoms vary depending on the location and size of the medullary tumor. If the tumor is located near the respiratory center, the patient may experience changes in respiratory muscle strength and slower breathing; if the tumor is located near the cardiovascular center, the patient may experience an accelerated or slowed heartbeat; if the tumor is located in front, to the side, or behind the medulla oblongata, it may affect movement or sensation, causing corresponding movement or sensory disorders.

Brainstem medullary tumor is a serious disease that causes serious damage to people's brain health, causing severe brain pain in patients, and also causing discomfort symptoms such as dizziness. Patients should be careful about the occurrence of brainstem medullary tumors, especially after the brain disease requires active treatment, and carefully understand the treatment measures of the disease in daily life. So, what are the clinical manifestations of medullary tumors?
Tumors of the medulla oblongata often have obvious symptoms and signs. For example, bilateral damage to the medulla oblongata may manifest as bilateral posterior cranial nerve palsy. Patients may experience swallowing cough, hoarseness, tongue muscle paralysis and atrophy. As the tumor develops, when the pyramidal tract on the ventral side of the brainstem is involved, crossed paralysis occurs, manifested as ipsilateral cranial nerve palsy and decreased muscle strength, increased muscle tone, tendon hyperreflexia and positive pathological signs on the contralateral limbs. Limb paralysis often starts from one lower limb and then develops to the upper limb on that side. However, the early manifestations of some slow-growing tumors are often not obvious.
In the early stage of pontine and medullary tumors, there are generally no symptoms of increased intracranial pressure. However, when bleeding or cystic changes occur in the tumor and cerebrospinal fluid circulation is affected, increased intracranial pressure may occur. Therefore, for patients with multiple cranial nerve damage or progressive crossed paralysis accompanied by pyramidal tract signs, the possibility of tumors in this area should be considered. In addition, cerebellar signs are also not uncommon, manifested as unstable gait, positive sign of difficulty standing with eyes closed, nystagmus and ataxia. In the late stage, bilateral cranial nerve involvement and pyramidal tract signs may occur. Some patients may also experience forced head position due to tumor invasion of the medulla oblongata and upper cervical spinal cord.
Malignant diffuse tumors generally have a short course and develop rapidly, accompanied by severe signs of brainstem damage, including cranial nerve palsy. However, early signs of increased intracranial pressure are rare and often appear in the late stages of the disease.
Neurological impairment in expansive tumors usually progresses slowly, and in some cases the signs of focal damage to the brainstem are very mild. Midbrain tumors can present with a variety of different limb spasticity manifestations.
Most patients with brainstem tumors have a slow onset, with mild headaches, and gradually develop cranial nerve paralysis, of which abducens nerve paralysis is more common, followed by facial paralysis, dysphagia, dysphonia, pyramidal tract damage, gait instability, and ataxia. Typical cases often present with crossed paralysis. CT scans and MRI examinations can help doctors determine the growth type of the tumor.