What are the signs and symptoms of Fryns syndrome? The Human Phenotype Ontology provides the following list of signs and symptoms for Fryns syndrome. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Anonychia 90% Aplasia/Hypoplasia of the lungs 90% Aplasia/Hypoplasia of the nipples 90% Broad forehead 90% Cognitive impairment 90% Congenital diaphragmatic hernia 90% Long philtrum 90% Low-set, posteriorly rotated ears 90% Multicystic kidney dysplasia 90% Short neck 90% Tented upper lip vermilion 90% Abnormality of the cardiac septa 50% Anteverted nares 50% Aplasia/Hypoplasia of the corpus callosum 50% Cerebral cortical atrophy 50% Cleft palate 50% Clinodactyly of the 5th finger 50% Coarse facial features 50% Cryptorchidism 50% Hypertelorism 50% Median cleft lip 50% Non-midline cleft lip 50% Opacification of the corneal stroma 50% Polyhydramnios 50% Seizures 50% Short distal phalanx of finger 50% Tetralogy of Fallot 50% Thickened nuchal skin fold 50% Wide mouth 50% Abnormality of female internal genitalia 7.5% Abnormality of the aorta 7.5% Aganglionic megacolon 7.5% Aplasia/Hypoplasia affecting the eye 7.5% Dandy-Walker malformation 7.5% Displacement of the external urethral meatus 7.5% Duodenal stenosis 7.5% Ectopic anus 7.5% Intestinal malrotation 7.5% Narrow chest 7.5% Omphalocele 7.5% Urogenital fistula 7.5% Vesicoureteral reflux 7.5% Abnormality of the helix - Absent left hemidiaphragm - Agenesis of corpus callosum - Anal atresia - Arrhinencephaly - Atria septal defect - Autosomal recessive inheritance - Bicornuate uterus - Bifid scrotum - Blepharophimosis - Broad ribs - Camptodactyly - Chylothorax - Cleft upper lip - Duodenal atresia - Ectopic pancreatic tissue - Esophageal atresia - Facial hirsutism - Hydronephrosis - Hypoplasia of olfactory tract - Hypoplasia of the optic tract - Hypospadias - Intellectual disability - Joint contracture of the hand - Large for gestational age - Meckel diverticulum - Microphthalmia - Microretrognathia - Polysplenia - Prominent fingertip pads - Proximal placement of thumb - Pulmonary hypoplasia - Renal agenesis - Renal cyst - Rocker bottom foot - Shawl scrotum - Short thumb - Single transverse palmar crease - Small nail - Stillbirth - Thin ribs - Thoracic hypoplasia - Ureteral duplication - Ventricular septal defect - Wide nasal bridge - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common.