“…Neuraminidase deficiency together with excretion of sialyloligosaccharides in urine were subsequently demonstrated in few patients with similar features [11, 12, 13, 14, 15]. Since 1979, about 15 other confirmed patients have been described [16, 17, 18, 19, 20, 21, 22, 23, 24]. This syndrome is now generally referred to type I sialidosis.…”