Síndrome congénito de Klippel-Trenaunay-Weber: caso clínico / Congenital Klippel-Trenaunay-Weber syndrome: clinical case

RESUMEN: El síndrome de Klippel-Trenaunay-Weber (SKTW) es una enfermedad congénita poco frecuente caracterizada por hipertrofia de un miembro que afecta a los huesos y a las partes blandas, con extensos angiomas planos, várices y otras anomalías vasculares, como fístulas arteriovenosas. Su incidencia es de 1:100.000 personas. El objetivo fue describir un caso raro de SKTW bilateral, confirmado con hallazgos clínicos e imagenológicos en un niño de 9 años de edad, de sexo masculino, con antecedentes de sangrado digestivo bajo, herniorrafía inguinal izquierda y orquidopexia ipsilateral. En ambos miembros inferiores se identificaron lesiones hemangiomatosas e hipertrofia muscular y edema en miembro inferior izquierdo con ausencia de segundo y tercer dedos del pie izquierdo por antecedente quirúrgico de amputación. Adicionalmente, presentaba adenopatías cervicales e inguinales. Dentro de los hallazgos radiográficos importantes, se observó una cortical ósea delgada en el fémur del miembro inferior izquierdo. El SKTW afecta típicamente a los miembros inferiores de forma unilateral; este es un caso infrecuente de afección bilateral (con predominio izquierdo). Algunos pacientes, registran compromiso visceral con hemorragia digestiva baja, además de alteraciones genitourinarias, presentes en el 30% de los casos. La presentación de adenopatías es inusual.

SUMMARY: Klippel-Trenaunay-Weber syndrome (KTWS) is a rare congenital disease characterized by limb hypertrophy affecting bones and soft tissues, with extensive flat angiomas, varicose veins, and other vascular abnormalities, such as arteriovenous fistulas. Its incidence is 1: 100,000 people. The aim of this work was to describe a rare case of bilateral KTWS, confirmed with clinical and imaging findings in a 9-year-old male, with a history of lower gastrointestinal bleeding, left inguinal herniorrhaphy and ipsilateral orchidopexy. In both lower limbs, hemangiomatous lesions and muscle hypertrophy were identified, and in the left lower limb edema was identified with absence of the second and third toes due to a surgical history of amputation. Additionally, the patient presented cervical and inguinal lymphadenopathy. Among the important radiographic findings, in the left lower limb femur a thin bony cortex was observed. KTWS typically affects the lower limbs unilaterally; this is an infrequent case of bilateral affection (predominantly left). Some patients have visceral involvement with lower gastrointestinal bleeding, as well as genitourinary alterations, present in 30 % of cases. The presentation of lymphadenopathy is unusual.

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Abstract: CLOVES syndrome is a rare, newly described, and relatively unknown syndrome, related to somatic mutations of the PIK3CA gene. Clinical findings include adipose tissue overgrowth, vascular malformations, epidermal nevi, scoliosis, and spinal deformities. This report deals with a characteristic phenotype case, highlighting peculiar cutaneous and radiological changes.

Prenatal Sonographic Diagnosis of Focal Musculoskeletal Anomalies

Focal musculoskeletal anomalies vary, and can manifest as part of a syndrome or be accompanied by numerous other conditions such as genetic disorders, karyotype abnormalities, central nervous system anomalies and other skeletal anomalies. Isolated focal musculoskeletal anomaly does, however, also occur; its early prenatal diagnosis is important in deciding prenatal care, and also helps in counseling parents about the postnatal effects of numerous possible associated anomalies. We have encountered 50 cases involving focal musculoskeletal anomalies, including focal limb dysplasia [radial ray abnormality (n=3), mesomelic dysplasia (n=1) ]; anomalies of the hand [polydactyly (n=8), syndactyly (n=3), ectrodactyly (n=1), clinodactyly (n=6), clenched hand (n=5) ]; anomalies of the foot [clubfoot (n=10), rockerbottom foot (n=5), sandal gap deformity (n=1), curly toe (n=2) ]; amniotic band syndrome (n=3) ; and anomalies of the focal spine [block vertebra (n=1), hemivertebra (n=1) ]. Among these 50 cases, five [polydactyly (n=1), syndactyly (n=2) and curly toe (n=2) ] were confirmed by postnatal physical evaluation, two (focal spine anomalies) were diagnosed after postnatal radiologic examination, and the remaining 43 were proven at autopsy. For each condition, we describe the prenatal sonographic findings, and include a brief review.