Colonic Metastasis with Anemia Leading to a Diagnosis of Primary Lung Adenocarcinoma

Abstract EN

Metastasis occurs with 50% of lung carcinomas, most commonly to lymph nodes, adrenal glands, liver, bone, and brain.

It is extremely rare for lung cancer to present with symptoms of a gastrointestinal metastasis and even more so pertaining to the colon.

To the best of our knowledge, only 12 such cases have been reported in the literature.

We describe a case of a 71-year-old female presenting with refractory iron deficiency anemia that was found to have a lesion in the transverse colon.

Pathology revealed adenocarcinoma of the lung and a subsequent lung lesion was discovered in a retrograde fashion.