Endoscopic tattooing is an effective means to enable subsequent endoscopic and surgical localization of luminal digestive tract lesions. India ink has been used effectively in a large number of cases over several decades. When diluted (1:100 with normal saline solution) and injected tangentially in small aliquots (0.5-1 mL), India ink tattooing is safe and long-lasting. One purified carbon particle suspension is the only FDA-approved agent for this indication and its ready-to-use formulation offers convenience. ICG has been used less frequently and appears to be safe but provides a less durable tattoo.
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging