PS02.232: BASALOID CARCINOMA OF THE ESOPHAGUS: MULTIMODAL APPROACH

Abstract

Abstract Background Basaloid cell carcinoma of the esophagus (BSCCE) is a rare (0.07–4%) poorly-differentiated variety of squamous cell carcinoma (SCC), more aggressive and with a worse prognosis than typical SCC. There are no published studies on the best therapeutic option for these tumors or on of the effectiveness of Neoadjuvant chemoradiotherapie; so there is no standard treatment. We describe the characteristics and the therapeutic strategy applied to a patient with an avanced basaloid squamous cell carcinoma of the distal esophagus. Methods A 70-year-old woman with dysphagia and severe malnutrition was diagnosed with locally advanced esophageal cáncer of lower esophagus The biopsy indicated moderately differentiated basaloid cell carcinoma. The clinical diagnosis was cT4NxM0, We decided multimodal treatment with curative intent: Neoadjuvant chemoradiotherapie at a dose of 41.4 Gy and concomitant carboplatin and pacliotaxel 5 cycles (CROSS scheme) plus surgery. Results PET-TAC post-neoadjuvant re-evaluation showed partial morphological response (reduction of tumor metabolism in 34.7%). 6 weeks after radiochemotherapy we performed a three fields total esophagectomy. Postoperative course without incidents. The pathological diagnosis was BASALOID cell CARCINOMA located in distal esophagus of 10 cm long with 30% tumor residual; it affects gastro-oesophageal junction. Stage TNM 7th ed: ypT3 N0 (0/17) L0V1R0 Our patient is fine and without evidence of recurrence after 15 meses. Conclusion Basal squamous cell carcinoma is more common in men around 60 years old, being rare in older women. They are located more frequently in the middle than in lower esophagus. They are tumors of poor prognosis (poorly differentiated, locally advanced and with an aggressive biological behavior that predisposes to early metastasis) although the latest publications relate the prognosis especially with the stage of the tumor. There are no published data about the use of Neoadjuvant treatment for these tumors. We have carried out a multimodal treatment (Cross scheme) followed by surgery with clinical, radiological (PET-TAC) and pathological response (30% of residual tumor in the piece) CONCLUSION The multimodal treatment with Cross scheme and surgery was useful in patients with Basaloid tumor of the esophagus can be considered for patients with this type of tumor. Disclosure All authors have declared no conflicts of interest.