Poorly Differentiated Lung Adenocarcinoma Recurring After Surgery and Chemotherapy

This lung cancer diagnosis at a glance

Subtype
Adenocarcinoma
Biomarkers
No driver mutation identified initially; recurrent tumor PD-L1 >50%
Sex
male
Treatment
surgery, chemotherapy and immunotherapy
Outcome
Setback / Progression

Treatment course, step by step

  1. Underwent left upper-lung wedge resection with lymph-node dissection in July 2023.
  2. Received 4 cycles of carboplatin and pemetrexed after surgery.
  3. After recurrence about 11 months later, started camrelizumab but could not tolerate it and declined further treatment.

What happened, in summary

A 66-year-old man was found to have several lung nodules during a routine check-up in July 2023. Surgery removed a tumor from the left upper lung together with nearby lymph nodes. Pathology showed poorly differentiated lung adenocarcinoma with invasion of the visceral pleura but no lymph-node metastasis. Testing did not identify a driver mutation.

One month later, he began 4 cycles of carboplatin and pemetrexed chemotherapy. No recurrence was seen during treatment. In June 2024, about 11 months after surgery, he returned with upper abdominal pain. Imaging showed a new mass near the aortic arch and enlarged lymph nodes in the mediastinum and both supraclavicular areas. Biopsy confirmed recurrent poorly differentiated carcinoma.

Testing of the recurrent cancer showed PD-L1 expression above 50% along with several acquired genomic alterations. Camrelizumab immunotherapy was started as second-line treatment. He was unable to tolerate the therapy and ultimately declined additional anticancer treatment. His course illustrates a rapid recurrence after surgery and adjuvant chemotherapy in a rare, poorly differentiated lung adenocarcinoma with SMARCA2 loss.

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This is a lay summary of an account first published by PMC / PubMed Central. Read the original in full

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