“…The prevalence of PLC in pancreatic cancer is not known, but is rare compared with primary cancers of the lung, breast, or stomach (in order of descending frequency). [15][16][17][18][19] The poor prognosis associated with lymphangitic carcinomatosis is reported in other primary tumor types. 20,21 This has promoted emphasis on early diagnosis of this type of spread, as well as how to best detect and diagnose lymphangitic carcinomatosis more conclusively, by biopsy 21 or a high-resolution CT for patients for whom a biopsy is not feasible.…”