A Case Report of Squamous Cell Carcinoma of Unknown Primary That Metastasized to an Inguinal Lymph Node

J Nippon Med Sch. 2021 Apr 19. doi: 10.1272/jnms.JNMS.2022_89-206. Online ahead of print.ABSTRACTThe term carcinoma of unknown primary (CUP) refers to a malignant tumor whose histology suggests strongly that it is a metastasis, yet the primary lesion is unknown despite sufficient whole body evaluation at the time of examination. CUP has similar incidences in men and women and the average age at diagnosis is 60 years. While its overall incidence varies depending on the report, it generally accounts for 1-5% of all cancers. Thus, it is rare. We encountered a case of squamous cell carcinoma of the inguinal region that seemed to be a metastasis and for which we could not find the primary lesion. This case is reported here along with a literature review on CUP to increase awareness of this rare lesion.PMID:33867427 | DOI:10.1272/jnms.JNMS.2022_89-206
Source: Journal of Nippon Medical School - Category: Universities & Medical Training Authors: Source Type: research