A case report is given to reemphasize the necessity of looking further after making the pathologic diagnosis of eosinophilic granuloma in a cutaneous lesion. The underlying disease in the case reported, chronic lymphatic leukemia, had not been discovered until this finding prompted further study of the patient. A brief summary of the literature as to classification and recognition of the entities which fall into this group is presented. We feel, as did Weidman,3Pinkus,4Lever,5and others, that the diagnosis of granuloma with eosinophils (or eosinophilic granuloma) of the skin, without further qualification, has no significance, unless it leads to further study of the patient with the hope of finding the true etiology of the lesion.