obsolete visual cortex disorder due to neoplasm

Visual Cortex Disorder Due to Neoplasm: An Obsolete Condition

The concept of a specific "visual cortex disorder due to neoplasm" (194068002) is mentioned in the provided context, but it appears to be an outdated or obsolete medical condition. According to search result 10, this code was used for professional guidelines, suggesting that it may have been relevant at some point in the past.

Causes and Characteristics

The causes of visual cortex disorder due to neoplasm are not explicitly stated in the provided context. However, based on related information (search results 12 and 14), it can be inferred that this condition was likely caused by tumors or other neoplastic growths affecting the occipital lobes of the brain.

Comparison with Modern Understanding

In modern medical understanding, cortical blindness is a more commonly recognized condition, which refers to visual loss due to bilateral lesions of the geniculocalcarine pathways in the brain (search result 12). This condition can be caused by various factors, including tumors, vascular anomalies, and other forms of brain damage.

Relevance to Modern Practice

Given the outdated nature of the "visual cortex disorder due to neoplasm" code, it is unlikely that this specific condition is still relevant in modern medical practice. The focus has shifted towards more contemporary and comprehensive understanding of cortical blindness and related conditions.

Citations:

• [10] - Mention of the "visual cortex disorder due to neoplasm" code as a professional guideline.
• [12] - Description of cortical blindness and its causes, including tumors affecting the occipital lobes.
• [14] - Discussion of vascular anomalies and other potential causes of visual loss in the context of cortical blindness.

Visual Cortex Disorder Due to Neoplasm: Signs and Symptoms

The signs and symptoms of an obsolete visual cortex disorder due to neoplasm, also known as a brain tumor affecting the visual cortex, can be varied and non-specific. However, some common symptoms include:

• Blurred vision: This is one of the most common symptoms, with 72.4% of patients complaining of nonspecific blurred vision on initial presentation [10].
• Floater symptoms: 22.1% of patients experience floater symptoms, which can be a sign of a tumor pressing on the optic nerve or optic chiasm [11].
• Visual field disturbances: Some patients may experience visual field disturbances, affecting their ability to see objects or people in certain areas [10].
• Loss of vision: In some cases, the tumor can cause permanent loss of vision, either partially or completely [15].

Other symptoms that may be associated with a brain tumor affecting the visual cortex include:

• Headaches: A common symptom, often caused by increased intracranial pressure [14].
• Focal neurologic deficits: Weakness or numbness in one side of the body can occur due to the tumor's location and size [14].
• Confusion: As the tumor grows, it can cause confusion, disorientation, and changes in mental status [14].

It is essential to note that these symptoms can be non-specific and may not necessarily indicate a visual cortex disorder due to neoplasm. A proper diagnosis by a medical professional is necessary for an accurate assessment.

References:

[10] The presenting symptoms and signs of PIOL are varied, but are generally associated with the afferent visual system. Most patients complain of nonspecific blurred vision (72.4%), floater symptoms (22.1%), and visual field disturbances (2.3%) on initial presentation. [11] These symptoms include loss of smell, weakness in one side of the body, or seizures. Any tumor that presses on the optic nerve or optic chiasm can temporarily or permanently cause blindness. [14] Introduction. Glioblastoma multiforme (GBM) is a Grade IV astrocytoma and represents the most common primary malignant brain tumor in adults. While it does not usually metastasize outside of the central nervous system (CNS), it carries a poor prognosis with an average survival rate of 14.6 months despite treatment. [15] Visual problems: A tumor in your brain area that controls eyesight may affect your vision. Blurred, double or even loss of vision can be signs of a brain tumor.

Based on the provided context, it appears that you are looking for diagnostic tests related to an obsolete visual cortex disorder caused by a neoplasm.

According to search result [3], Cortical blindness is the loss of vision in a normal-appearing eye due to damage to the brain's occipital cortex. It can be acquired or congenital, with causes including neoplasms (tumors).

For diagnosing cortical blindness caused by a neoplasm, imaging studies such as Brain Perfusion Single Photon Emission Computed Tomography (SPECT) scans [5] and MRI [6] are useful in detecting the tumor. Additionally, Visual Evoked Potential (VEP) [10] can be used to measure brain activity in the visual cortex elicited by a visual stimulus, allowing an objective evaluation of cortical function.

Other diagnostic tests that may be relevant include:

• Blood and CSF examinations to detect autoimmune, infectious, metabolic, or neoplastic causes [2]
• Imaging studies to rule out vascular and neoplastic causes [2]
• Brain biopsy is considered the gold standard for diagnosis, but research has progressed to non-invasive methods [7]

It's worth noting that cortical blindness caused by a neoplasm is an obsolete condition, as modern medical practices have advanced significantly. However, understanding the diagnostic tests used in the past can provide valuable insights into the history of medicine.

References: [3] Cortical (cerebral) visual impairment (CVI) is characterized by visual dysfunction associated with damage to the optic radiations and/or visual cortex. [5] Brain perfusion single photon emission computed tomography (SPECT) scans were initially developed in 1970's. A key radiopharmaceutical ... [6] MRI is the imaging study of choice in patients with olivopontocerebellar atrophy (OPCA) because CT scanning does not provide adequate resolution of the pons ... [10] Detailed descriptions of standardised methods [1–5] and common clinical applications including those for retinal disease are beyond the scope of this review, but the main tests are outlined below. The visual evoked potential (VEP) measures brain activity in the visual cortex elicited by a visual stimulus, allowing an objective evaluation of ...

Based on the provided context, it appears that there are limited options for drug treatment specifically targeting visual cortex disorders caused by neoplasms (tumors). However, I can provide some general information on treatments related to brain tumors and their potential impact on vision.

• Targeted therapy: Targeted therapy for brain tumors uses medicines that attack specific chemicals present within the tumor cells. By blocking these chemicals, targeted therapy aims to slow or stop the growth of the tumor (6). While this treatment approach may not directly target visual cortex disorders, it could potentially alleviate symptoms related to brain tumors.
• Chemotherapy: Chemotherapy is a type of cancer treatment that uses medications to kill cancer cells. In some cases, chemotherapy may be used in conjunction with surgery and radiation therapy to treat brain tumors (8). However, the effectiveness of chemotherapy in treating visual cortex disorders caused by neoplasms is unclear.

It's worth noting that the provided context does not specifically mention drug treatments for visual cortex disorders due to neoplasm. The information available suggests that surgery, radiation therapy, and targeted therapy are more commonly discussed treatment options for brain tumors (2, 5, 6).

The differential diagnosis for an obsolete visual cortex disorder due to neoplasm involves considering various conditions that can cause similar symptoms.

According to [10], the differential diagnosis for a visual cortex disorder due to neoplasm includes:

• Diffuse uveal melanocytic proliferation
• Autoimmune retinopathy
• Other ocular and systemic conditions that can affect the visual pathway

Additionally, [6] mentions that the differential diagnosis of a brain lesion (especially a solitary one) includes primary brain tumor, abscess, and metastatic tumor.

It's also worth noting that [14] states that acute vision loss is a frightening experience for patients and has the potential for long-term consequences. A careful history is key to narrowing the differential diagnosis and will allow for a more focused yet systematic physical examination.

In terms of specific conditions, [9] mentions that the differential diagnosis for distortions of vision in terms of size (micropsia or macropsia), shape (metamorphopsia), and color (chromesthesia) includes various causes such as:

• Metastatic tumor
• Primary brain tumor
• Abscess
• Other conditions affecting the visual pathway

Overall, a comprehensive differential diagnosis for an obsolete visual cortex disorder due to neoplasm requires considering multiple conditions that can cause similar symptoms.

References: [6] HB NEWTON · 1999 · Cited by 137 [9] by ER McGrath · 2016 · Cited by 5 [10] Weppelmann TA, Khalil S, Zafrullah N, Amir S, Margo CE Cancer Control 2022 Jan-Dec;29:10732748221144458. doi: 10.1177/10732748221144458. [14] INTRODUCTION. Acute vision loss is a frightening experience for patients and has the potential for long-term consequences. The many causes of acute vision loss and the time-sensitive need for evaluation and treatment pose diagnostic and therapeutic challenges [].A careful history is key to narrowing the differential diagnosis and will allow for a more focused yet systematic physical examination.