1. Cactus spine injuries.;Lindsey;Am J Emerg Med,1988
2. Cactus thorn injuries to the extremities: their management and etiology.;Karpman;Ariz Med,1980
3. Cactus spine granuloma.;Madkan;Cutis,2007
4. Cactus granuloma of the skin.;Suzuki;J Dermatol,1993
5. Granuloma formation induced by spines of the cactus, Opuntia acanthocarpa.;Spoerke;Vet Hum Toxicol,1991