While a resident at Scott & White Hospital of the Texas A&M University Health System, Dr. Greenberg co-authrored an article in the Archives of Dermatology. This article details a patient who had a non-healing ulcer that had been evaluated and treated by other providers as a stomal irritation. A non-healing sore had developed at the site of the patients stoma. When the patient was seen by Dr.'s Greenberg and Butler, a biopsy was performed of the ulcer because of the unusual history and lack of response to multiple topical therapies. When the biopsy results were returned, the ulcer was identified as metastatic colon cancer. The patient underwent surgery and evaluation by the oncology team after being diagnosed by the dermatology team at Scott & White.

Greenberg HL, Lopez L, Butler DF, Peristomal metastatic adenocarcinoma of the rectum, Archives of Dermatology Vol. 142, Oct. 2006 pgs. 1372-1373.