PMC6319301_01
:(a) and (b) Cerebral MRI (T2 + FLAIR) shows no abnormal signal within the limbic regions.
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Cerebral MRI with T1, T2 and FLAIR sequences showed no abnormalities (Fig. 1a and b).
Thoracic CT shows a tumor mass that obstructs the left lower lobe bronchus with left hilar and sub-carinal adenomegalies.
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T2bN3M0 (see Fig. 2). Through clinical, biological and radiological data, we established the diagnosis: paraneoplastic limbic encephalitis revealing a locally advanced small cell carcinoma of the lung.
PMC6319301_02
(a) and (b) Cerebral MRI revealing bilateral high signal intensity on T2-weighted and FLAIR image in the hippocampus.
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CT scan objectified a tissue mass extending from the hilus to the right upper lobe, measuring 59 mm of diameter, associated with sub-pleural speculated nodules of the right lower lobe, mediastinal lymph nodes in the zones 4R, 7 and 10. Cerebral MRI revealed bilateral high signal intensity on T2-weighted and FLAIR image in the hippocampus (Fig. 3a and b).