Immunotherapy combined with chemotherapy: a promising therapeutic approach in the management of colonic squamous cell carcinoma—a case report

Colorectal squamous cell carcinoma (CSCC) is an exceedingly rare malignancy, accounting for approximately 0.41% of all colorectal cancers. This case report describes a 52-year-old male with a history of chronic bronchitis, varicose vein of the lower limb, diabetes, and Hepatitis B cirrhosis, who pre...

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Main Authors: Bingbing Ren, Haitao Yang, Yingying Mao
Format: Article
Language:English
Published: Frontiers Media S.A. 2025-05-01
Series:Frontiers in Oncology
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Online Access:https://www.frontiersin.org/articles/10.3389/fonc.2025.1548008/full
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author Bingbing Ren
Haitao Yang
Yingying Mao
author_facet Bingbing Ren
Haitao Yang
Yingying Mao
author_sort Bingbing Ren
collection DOAJ
description Colorectal squamous cell carcinoma (CSCC) is an exceedingly rare malignancy, accounting for approximately 0.41% of all colorectal cancers. This case report describes a 52-year-old male with a history of chronic bronchitis, varicose vein of the lower limb, diabetes, and Hepatitis B cirrhosis, who presented with worsening abdominal pain. The patient underwent a right hemicolectomy, and postoperative pathology revealed a moderately differentiated CSCC with proficient mismatch repair (pMMR) status. The patient was initially treated with the CAPEOX adjuvant chemotherapy regimen, the patient’s condition unfortunately progressed. Therefore, the treatment plan has been adjusted to include nab-paclitaxel and carboplatin, in combination with camrelizumab, an Anti-PD-1 therapy, for antitumor therapy. The combination therapy resulted in a partial response. This case highlights the potential efficacy of Anti-PD-1 therapy combined with chemotherapy in CSCC, suggesting a possible treatment approach for this rare cancer subtype.
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issn 2234-943X
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publishDate 2025-05-01
publisher Frontiers Media S.A.
record_format Article
series Frontiers in Oncology
spelling doaj-art-2eb43f59407445f0a79d786b5e8e76ed2025-08-20T03:53:06ZengFrontiers Media S.A.Frontiers in Oncology2234-943X2025-05-011510.3389/fonc.2025.15480081548008Immunotherapy combined with chemotherapy: a promising therapeutic approach in the management of colonic squamous cell carcinoma—a case reportBingbing Ren0Haitao Yang1Yingying Mao2Department of Pediatric Surgery, General Hospital, Tianjin Medical University, Tianjin, ChinaDepartment of General Practice, Liaocheng People’s Hospital, Liaocheng, Shandong, ChinaDepartment of General Practice, Liaocheng People’s Hospital, Liaocheng, Shandong, ChinaColorectal squamous cell carcinoma (CSCC) is an exceedingly rare malignancy, accounting for approximately 0.41% of all colorectal cancers. This case report describes a 52-year-old male with a history of chronic bronchitis, varicose vein of the lower limb, diabetes, and Hepatitis B cirrhosis, who presented with worsening abdominal pain. The patient underwent a right hemicolectomy, and postoperative pathology revealed a moderately differentiated CSCC with proficient mismatch repair (pMMR) status. The patient was initially treated with the CAPEOX adjuvant chemotherapy regimen, the patient’s condition unfortunately progressed. Therefore, the treatment plan has been adjusted to include nab-paclitaxel and carboplatin, in combination with camrelizumab, an Anti-PD-1 therapy, for antitumor therapy. The combination therapy resulted in a partial response. This case highlights the potential efficacy of Anti-PD-1 therapy combined with chemotherapy in CSCC, suggesting a possible treatment approach for this rare cancer subtype.https://www.frontiersin.org/articles/10.3389/fonc.2025.1548008/fullcolorectal cancersquamous cell carcinomaanti-PD-1 therapymicrosatellite instabilitycase report
spellingShingle Bingbing Ren
Haitao Yang
Yingying Mao
Immunotherapy combined with chemotherapy: a promising therapeutic approach in the management of colonic squamous cell carcinoma—a case report
Frontiers in Oncology
colorectal cancer
squamous cell carcinoma
anti-PD-1 therapy
microsatellite instability
case report
title Immunotherapy combined with chemotherapy: a promising therapeutic approach in the management of colonic squamous cell carcinoma—a case report
title_full Immunotherapy combined with chemotherapy: a promising therapeutic approach in the management of colonic squamous cell carcinoma—a case report
title_fullStr Immunotherapy combined with chemotherapy: a promising therapeutic approach in the management of colonic squamous cell carcinoma—a case report
title_full_unstemmed Immunotherapy combined with chemotherapy: a promising therapeutic approach in the management of colonic squamous cell carcinoma—a case report
title_short Immunotherapy combined with chemotherapy: a promising therapeutic approach in the management of colonic squamous cell carcinoma—a case report
title_sort immunotherapy combined with chemotherapy a promising therapeutic approach in the management of colonic squamous cell carcinoma a case report
topic colorectal cancer
squamous cell carcinoma
anti-PD-1 therapy
microsatellite instability
case report
url https://www.frontiersin.org/articles/10.3389/fonc.2025.1548008/full
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AT yingyingmao immunotherapycombinedwithchemotherapyapromisingtherapeuticapproachinthemanagementofcolonicsquamouscellcarcinomaacasereport