Abstract
Solid-organ tumors involving inguinal lymph nodes commonly originate from genitourinary
tract, skin, ano-rectum, or the urinary bladder. Thus, solitary metastatic involvement
of inguinal lymph nodes from extra-abdominal primary malignancies is extremely rare.
However, involvement of nonregional lymph nodes upstages the disease to M1b with poor
prognosis. Identification of the site of metastases is extremely crucial for deciding
the management of patients.
This is the first ever case reported of de-novo or synchronous oligometastatic disease
of carcinoma lung with inguinal lymph node involvement. In addition, it highlights
the importance of 18FDG PET-CT to diagnose the involvement of inguinal lymph node that was further proved
on fine needle aspiration cytology. Only two such cases of lung cancer have been reported,
but both of them had inguinal lymph node during the follow-up and none was present
at initial presentation.
Keywords
inguinal metastases - carcinoma lung - oligometastasis - FDG PET-CT
