Faye was seen today following her PET scan and EBUS biopsy of her right upper lobe lesion. Unfortunately it has revealed a moderately differentiated adenocarcinoma and the PET san was positive in the area of the lesion. Reassuringly though there was no evidence of loco-regional lymph node spread or any evidence of distal metastases. This would normally suggest a stage 1 lung cancer but the complicating factor here is that the immunohistochemical staining has come back positive for an adenocarcinoma of likely GI origin, with the staining for adenocarcinoma for lung origin being negative. There are rare cases where a primary lung cancer can demonstrate this marker profile and certainly the negative PET scan in other areas of the body is reassuring
