ArticleFrontiers in oncology2025
Overcoming diagnostic pitfalls in primary gastric squamous cell carcinoma: the imperative of adequate sampling in an elderly female patient, case report.
Article in Frontiers in oncology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Objective: To report the diagnosis and treatment of a rare case of primary gastric squamous cell carcinoma (PGSCC) in an elderly female, and to explore the diagnostic pitfalls and individualized treatment strategies. Methods: We conducted a retrospective analysis of the clinical, imaging, endoscopic, and pathological data of a 77-year-old female patient. The evolution of the diagnosis from the initial "possible adenocarcinoma" to the final diagnosis of " squamous cell carcinoma" was emphasized. Results: The patient presented with abdominal pain. The first endoscopic biopsy, due to the limited tissue sample, showed immunohistochemistry results of CKpan (+), CK7(+), MUC5AC (focal+), and Ki-67(partly+), favoring a diagnosis of adenocarcinoma. A subsequent deep biopsy with complete immunohistochemistry (CK5/6+, P40+, P63+) confirmed the diagnosis of gastric squamous cell carcinoma. Given the patient's advanced age, poor physical condition, and refusal of surgery, a palliative treatment plan of "Raltitrexed + Sintilimab" was finally decided upon after a multidisciplinary consultation. Conclusion: This case highlights the importance of adequate sampling in the diagnosis of gastric squamous cell carcinoma to avoid misdiagnosis due to limited specimens. It also provides a potential treatment option of immune therapy combined with low-dose chemotherapy for elderly patients with gastric squamous cell carcinoma who are not suitable for surgery.
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