A unique case of lung cancer: biphasic sarcomatoid squamous cell carcinoma in a rural setting

Biphasic sarcomatoid squamous cell carcinoma (BSSCC) is an exceptionally rare and aggressive form of non-small cell lung cancer, characterized by both epithelial and mesenchymal components. Its rarity and histological complexity pose significant diagnostic and therapeutic challenges. This report presents a case of BSSCC in an 82-year-old farmer, emphasizing the role of environmental exposures and diagnostic modalities in identifying this unusual malignancy.

An 82-year-old male farmer and livestock keeper with a history of smoking, presented with progressive dyspnea, weight loss, and productive cough. Imaging revealed a cavitary mass in the right upper lobe with mediastinal lymphadenopathy. Subsequent bronchoscopy evaluation revealed bronchial congestion and narrowing. Ultimately, pathological analysis confirmed BSSCC through hematoxylin and eosin staining findings and positive immunohistochemical staining for P63 and AE1/AE3.

This case highlights the interplay between occupational exposure and smoking as risk factors for rare lung cancers like BSSCC. The cavitary nature of the tumor and lymphatic involvement indicated aggressive disease progression like what have been observed in malignant lung cancers in prior studies. Accurate diagnosis required a combination of imaging, bronchoscopy, histopathology, and immunohistochemistry to differentiate BSSCC from other malignancies. The patient declined further treatment and limited outcome assessment.

Early recognition of BSSCC is critical for timely intervention in high-risk populations such as elderly individuals with occupational exposures and smoking history. Comprehensive diagnostic evaluation is essential for accurate identification and management. Further research is needed to explore therapeutic strategies that could improve outcomes for patients with this rare tumor.