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Smelled Rotten Eggs? It Could Be a Brain Tumor
29 Jul
Summary
- A young woman's persistent 'rotten egg' smell was a hidden brain tumor symptom.
- The patient experienced olfactory hallucinations (phantosmia) for six months.
- An MRI revealed a tumor in the left medial temporal lobe, later confirmed as a glioma.
A recurring perception of smelling 'rotten eggs' was the initial symptom of a brain tumor in a 23-year-old woman. This olfactory hallucination, termed phantosmia, persisted for six months and was initially attributed to psychological factors by her family. The symptom was characterized by sudden, brief episodes of foul odor.
The situation escalated when the patient experienced a five-minute episode of unresponsiveness, leading to a neurology consultation. Dr. Sudhir Kumar recognized the olfactory hallucinations as a potential neurological issue, possibly linked to epilepsy. Subsequent diagnostic tests, including an MRI and EEG, revealed a mass in the patient's left medial temporal lobe and abnormal electrical activity.
This mass was identified as a low-grade glioma, a treatable brain tumor common in young adults. The tumor had been triggering seizures, with the phantom smell being the earliest manifestation. After surgical removal of the tumor and placement on anti-seizure medication, the patient fully recovered and was symptom-free six weeks post-operation.
Dr. Kumar emphasized that while uncommon, persistent or stereotyped olfactory hallucinations, especially when accompanied by altered awareness, warrant neurological evaluation. He highlighted the importance of listening carefully to patient symptoms, as even seemingly minor complaints can indicate serious underlying conditions.
