Harvey Blank, M.D.
From the Department of Dermatology and Syphilology, University of Pennsylvania, School of Medicine, Dr. Donald M. Pillsburgy, Director
1. Tropical phagedenic ulcer is a distinct entity with a characteristicappearance. It occurs on the lower extremity as a large roundedulcer with undermined edges, and is filled with a wet gangrenousslough, in which fusiform bacilli and spirochetes predominatein the bacterial flora.
2. If inadequately treated, the lesionmay persist as a chroniculcer with a hard fibrosed base andborder. In this stage thereare no longer any bacteriologicor histopathologic featureswhich distinguish it from otherindolent ulcers. It is important,from the standpoint of bothprognosis and therapy, to differentiatebetween the acute phagedeniculcer and the chronic non-specificulcer.
3. Other diseasesto be considered in differential diagnosisare: desert sore,cutaneous diphtheria, pyogenic ecthyma, cutaneousleishmaniasis,syphilitic gummata, and other rarer ulcerativelesions.
4.The geographic distribution of the disease is presented.
5.The etiology is discussed. The preponderance of evidencetodate indicates that the ulcers are caused by Vincent's fusospirochetesin a host who has become susceptible to infection as a resultof a vitamin B deficiency, and who is possibly further debilitatedby chronic disease and general malnutrition.
6. The successfultreatment of Vincent's infections of the mouth:gingivitis,angina, and noma with penicillin is recorded. Thesuperb resultsof other investigators and of the author in treatingthe activephase of tropical phagedenic ulcers with penicillinindicatesthat it will probably become the treatment of choice.The chronicstage should be treated surgically.