Fig. 1
From: Cervical lymph node enlargement as the initial manifestation of rectal cancer
a (Cervical ultrasound) showed multiple hypoechoic nodules in the left neck and left supraclavicular fossa with clear boundaries, irregular morphology, multiple dotted strong echoes and rich blood flow signals. b, c (Chest computed tomography) showed multiple enlarged lymph nodes in the bilateral submandibular region, bilateral carotid sheath and intermuscular space of the cervical root. d (Whole gastrointestinal tract barium X-ray radiography) showed whole gastrointestinal tract has no sign of obstruction. e, f (Lower gastrointestinal endoscopy) showed irregularly elevated rectal mucosa with congestion, erosion and easy bleeding. The lesion caused rectal narrowing and the endoscopy was not able to pass through