A Case Report of Primary Pulmonary Lymphoepithelioma-Like Carcinoma with "Harmful" Pseudoprogression and a Pathological Complete Response (pCR) after Immunotherapy Plus Radiotherapy.

ABSTRACT:

Background

Primary pulmonary lymphoepithelioma-like carcinoma (PPLELC) is a rare subtype of primary non-small cell lung cancer (NSCLC), with no established treatment guidelines. We present a case of a young female with PPLELC who achieved a pathological complete response (pCR) in both primary and metastatic lesions after receiving combined immunotherapy and radiotherapy.

Case description

We present a 33-year-old female patient with stage IVa (cT2bN0M1b) PPLELC. As a first-line treatment, the patient received seven cycles of nab-paclitaxel combined with toripalimab (a PD-1 inhibitor) and achieved stable disease. This was followed by toripalimab maintenance therapy for nearly 30 months. During toripalimab maintenance therapy, the patient demonstrated slight enlargement of both

SUBMITTER: Qin S 

PROVIDER: S-EPMC12712691 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature