Cartilage and Bone Tumors and Vascular Anomalies Clinic

At the Cartilage and Bone Tumors and Vascular Anomalies Clinic, we specialize in the diagnosis and management of cartilage tumors, bone tumors and vascular anomalies in children and adults. These tumors or vascular anomalies may be benign or malignant. Most of our patients do not have a family history of these conditions, but a clinical and genetic diagnosis can influence a patient’s surveillance, pharmacological treatment and cancer prevention. 

At the Cartilage and Bone Tumors and Vascular Anomalies Clinic, we see patients who have a wide range of cancerous and noncancerous cartilage and bone tumors and vascular anomalies, including, but not limited to: 

  • Ollier disease
  • Maffucci syndrome
  • Metaphyseal enchondromatosis with D-2-hydroxyglutaric aciduria
  • Genochondromatosis
  • Dysspondyloenchondromatosis
  • Spondyloenchondrodysplasia with immune dysregulation
  • Metachondromatosis
  • Hereditary multiple exostosis
  • Hereditary hemorrhagic telangiectasia
  • Vascular tumors
  • Vascular malformations:
    • Capillary malformations
    • Lymphatic malformations
    • Venous malformations
    • Arteriovenous malformations
    • Arteriovenous fistula
    • Klippel-Trenaunay syndrome
    • Parkes Weber syndrome
    • Sturge-Weber syndrome

Contact Us

If you believe you or your child’s personal or family history is concerning for one of these conditions, and you would like to learn more about it and the genetic testing that may be appropriate, ask your primary team about making a referral for a genetic appointment in our clinic. You can contact us directly at 410-955-0317.

Our Team

Our team consists of geneticists, genetic counselors and genetic counselor assistants who have expertise in genetic syndromes. To ensure timely and accurate diagnosis, we strive to schedule patients as soon as possible. We work closely with the orthopaedic surgery team, the dermatology team, the interventional radiology team and the Vascular Anomalies Center. If patients need inpatient hospital care, we may consult with the teams who are managing their care.


Nara Lygia de Macena Sobreira MD PhD

  • Associate Professor of Genetic Medicine

Orthopaedic Surgery

Adam Scott Levin MD

  • Vice Chair of Faculty Development, Department of Orthopaedic Surgery
  • Associate Professor of Orthopaedic Surgery


Annie Grossberg MD

  • Director of Pediatric Dermatology
  • Assistant Professor of Dermatology

Interventional Radiology

Clifford Raabe Weiss MD

  • Director, the Johns Hopkins HHT Center of Excellence
  • Professor of Radiology and Radiological Science

Genetic Counselors

Kelsey Stauff Guthrie, M.G.C., C.G.C.

Kelsey Guthrie is a certified genetic counselor. She provides genetic counseling to pediatric and adult patients and their families in the Metabolic Genetics Clinic in the Department of Genetic Medicine at The Johns Hopkins Hospital. She graduated from University of Maryland with a master’s degree in genetic counseling. She completed her undergraduate training at the University of Maryland, majoring in secondary education and biology. She is a member of the American Board of Genetic Counseling, the National Society of Genetic Counselors and the Maryland and D.C. Society of Genetic Counselors.

Kelsey Stauff Guthrie

Genetic Counselor Assistants

Jennifer Cedeno

Administrative Staff

Dana Goins
Clinic Manager

Dora Knight
Sr. Medical Office Coordinator