He X, Song S, Yang P, Cao F, Li W, Liang P. A rare radiotherapy-sensitive primitive neuroectodermal tumor with
APC gene amplification in an adult: a case report and literature review.
J Int Med Res 2022;
50:3000605221118704. [PMID:
35983861 PMCID:
PMC9393680 DOI:
10.1177/03000605221118704]
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Abstract
Primitive neuroectodermal tumor (PNET) of the lung is rare in adults, and
treatment options vary. We herein describe the disease course and follow-up of
PNET in an adult. A 27-year-old man was admitted to our hospital because of
cough and headache, and whole-exome sequencing revealed positive expression of
the EWSR1-FLI1 fusion gene and amplification of the
APC gene. Although the patient received multidisciplinary
treatment including chemotherapy regimens of etoposide plus cisplatin; focal
radiotherapy focusing on the cerebrum, lung, and kidneys; and a subsequent
palliative gastrointestinal operation, he eventually died of multiple organ
functional failure. His overall survival period was 18 months, and his
progression-free survival period was 4 months. During the treatment, the patient
showed remarkable sensitivity to radiotherapy. In conclusion, PNET of the lung
in adult patients is extremely rare, and the prognosis is very poor. Involvement
of a multidisciplinary team in the development of personalized therapeutic
strategies is essential. This patient with APC gene
amplification showed excellent sensitivity to radiotherapy for intrapulmonary
and intracranial lesions, suggesting that APC gene
amplification may be related to radiotherapy sensitivity. However, further
clinical research is needed.
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