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Updated: Aug 1, 2025

Chemical-Induced Skin Carcinogenesis Model Using Dimethylbenz[a]Anthracene and 12-O-Tetradecanoyl Phorbol-13-Acetate DMBA-TPA

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Case 317.

Pokhraj P Suthar¹, Miral Jhaveri¹, Mustafa Mafraji¹

¹From the Department of Diagnostic Radiology and Nuclear Medicine, Rush University Medical Center, 1653 W Congress Pkwy, Chicago, IL 60612.

|April 24, 2023

Summary

This summary is machine-generated.

A previously healthy man experienced rapid cognitive and neuropsychiatric decline. Extensive testing, including brain imaging, was performed to identify the cause of his progressive neurological symptoms.

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Area of Science:

Neurology
Neuroscience
Medical Diagnostics

Background:

A 44-year-old man presented with a 9-month history of progressive cognitive decline, depression, and functional impairment.
Symptoms included memory impairment, poor attention, and behavioral changes.
A family history of a similar decline in his brother suggested a potential genetic component.

Purpose of the Study:

To investigate the underlying cause of rapidly progressive cognitive and neuropsychiatric symptoms in a previously healthy adult.
To differentiate from common causes of cognitive decline through comprehensive diagnostic workup.

Main Methods:

Detailed patient history and neurological examination were conducted.
Extensive laboratory workup included toxicology, infectious disease screening (HIV, syphilis, COVID-19), and vitamin level measurements.
Cerebrospinal fluid (CSF) analysis for oligoclonal bands and flow cytometry was performed.
Computed tomography (CT) of the brain was followed by magnetic resonance imaging (MRI) with and without contrast for detailed intracranial assessment.

Main Results:

Routine laboratory screenings and CSF assays were within normal limits.
Initial CT scan did not reveal acute intracranial abnormalities.
MRI of the brain was ordered for further detailed evaluation of the neurological changes.

Conclusions:

The patient presented with severe cognitive and neuropsychiatric symptoms requiring thorough investigation.
Initial diagnostic workup, including extensive laboratory tests and basic imaging, did not yield a definitive diagnosis.
Advanced neuroimaging (MRI) was deemed necessary for further assessment of the progressive neurological decline.