PT  - JOURNAL ARTICLE
AU  - Omer Jamall
AU  - Korina Theodoraki
AU  - Sepideh Amin
AU  - David Verity
AU  - Adam Bates
TI  - Rectal adenocarcinoma: rare metastasis to the optic nerve
AID  - 10.1136/bcr-2018-228090
DP  - 2019 Jan 01
TA  - BMJ Case Reports
PG  - e228090
VI  - 12
IP  - 1
4099  - http://casereports.bmj.com/content/12/1/e228090.short
4100  - http://casereports.bmj.com/content/12/1/e228090.full
SO  - BMJ Case Reports2019 Jan 01; 12
AB  - We present the first reported case of histologically proven colorectal adenocarcinoma with metastatic spread to the optic nerve. A 49-year-old man, with a known history of rectal adenocarcinoma, presented with progressive loss of vision in his left eye. On presentation, he had no perception to light in his left eye and Snellen acuity of 6/36 in the right eye. Fundus examination showed a left globally swollen optic nerve with a few flame-shaped haemorrhages. A gadolinium-enhanced MRI scan demonstrated abnormal thickening of the anterior and mid-section of the optic nerve with high signal on STIR and postgadolinium enhancement. Optic nerve biopsy confirmed the presence of epithelial adenocarcinoma compatible with metastasis of gut origin. The patient died within 4 months of presentation.