Borst, 
Maximilian, German pathologist, 1869-1946. Borst-Jadassohn type intraepidermal epithelioma - precancerous lesions clinically suggestive of actinic or seborrheic keratosis, with nest of immature or abnormal keratinocytes within the epidermis.
Jadassohn, 
Josef, German dermatologist in Switzerland, 1863-1936. Borst-Jadassohn type intraepidermal epithelioma - see under 
Borst Jadassohn nervus - congenital papillary acanthosis of the epidermis, with hyperplasia of sebaceous glands developing at puberty and presence of apocrine glands in nonapocrine areas of the skin. Synonym(s): nevus sebaceus
Jadassohn-Lewandowski syndrome - ectodermal dysplasia of abnormal thickness and elevation of nail plates with palmar and plantar hyperkeratosis. Synonym(s): pachyonychia congenita
Jadassohn-Pellizzari anetoderma - cutaneous atrophy preceded by erythematous or urticarial lesions of the trunk and upper portions of the extremities.
Jadassohn-Tièche nevus - a dark blue or blue-black nevus covered by smooth skin and formed by heavily pigmented spindle-shaped or dendritic melanocytes in the reticular dermis. Synonym(s): blue nevus
Medical Eponyms © Farlex 2012