INTRODUCTION
Colorectal cancer (CRC) is the world’s third most common cancer. (1) The
incidence of CRC is variable among high and low-income countries due to
lifestyle differences and early detection in screening programs of
premalignant lesions or polyps, the presentation of colorectal cancer is
variable depending on the involved location across the colon with more
than 50% of the patients die from their CRC cancer, metastasis is
usually present in 20% at the time of diagnosis, most commonly
identified site of metastasis is Liver, Lungs, and brain respectively,
however, no clear information about the exact percentage of each
metastasis as staging system usually stage them as stage IV without
clarifying the involved sites. (2-6) Metastatic laryngeal cancers
represent less than 1% of all laryngeal malignancies, with Skin
melanoma and Renal cell carcinoma being the most common primary cancers
to metastasize to the larynx as reported by fertile et al. in 1988,
however, a recent review of the English literature showed that
colorectal cancer metastasis to the larynx is the most common and
compromise quarter of 41 cases. (3, 5) Dysphonia is the term used to
describe any impairment or alteration of the voice with hoarseness;
primarily, it is due to vocal muscle irregular oscillation owing to
underlying muscle tension or dysfunction, incomplete closure of glottis
on vocalization, or pressure effect excreted on the vocal folds by mass
or tumor. (4)