Extraventricular Neurocytoma of the Posterior Fossa: A Case Report Written by ChatGPT

Abstract

ChatGPT (Chat Generative Pre-trained Transformer) is the latest artificial intelligence (AI) tool that has taken the internet by storm. A large language model-based AI tool, ChatGPT is used to generate natural prose-like answers learning from a large database of text. A lot is being written and spoken about the future of academic writing using this tool.We attempt to generate a short case report of a brain tumour labelled extraventriuclar neurocytoma (EVN) which is a rare tumour of the central nervous system. When posed with a set of questions on this uncommon topic, ChatGPT did well with relevant but not very specific answers. Validation of the information is an issue like with most machine learning solutions. This case report is an attempt to summarise EVN and its management. Q: Summarise extraventricular neurocytoma. ChatGPT: EVN is a rare and benign tumor that typically occurs in the brain. It often causes no symptoms, but as it grows, it can cause headaches, seizures, and changes in vision or balance. Surgery is usually curative, but there is a lack of studies to know the best treatment options. The prognosis is generally good with high rates of long-term survival and low rates of recurrence. Text italicised in the article is generated by ChatGPT.

Keywords: artificial intelligence (ai); brain tumour; chatgpt; extraventricular neurocytoma; neuro oncology.

Figure 1. MRI characteristics of the lesion

A 4cm x 4.5cm extra-axial space occupying lesion in the left cerebellopontine angle cistern, compressing the left cerebellar hemisphere , medulla, pons and mid brain. The lesion is not causing internal auditory meatus widening/extension, no white matter edema and has the following MRI characteristics: A- T2: Homogenous hyperintense; B- FLAIR: Homogenous hyperintense; C- T1: Homogenous hypointense; D- DWI: Homogenous hyperintense; E- ADC: Homogenous isointense; F- T1 contrast: Minimal heterogenous enhancement with few cystic areas. Red arrow demonstrates the lesion in all sequences, blue arrow in sequence A depicts brain stem distortion with compression of the fourth ventricle.

Figure 2. Postoperative CT scan images

A- Immediate postoperative non-contrast axial CT scan showing tumour decompression; B- Three-month follow-up non-contrast CT scan showing good clearance of the lesion. Red arrow identifies the operative field.

Figure 3. The use of ChatGPT in manuscript preparation

Figure 4. Creating a table with ChatGPT