First report of an aneurysmal bone cyst presenting as subungual mass.
Painful subungual tumor masses in the toes usually emerge as glomus tumors or subungual exostoses. We present a patient with an aneurysmal bone cyst located subungually in whom the diagnosis was delayed due to inadequate diagnostic procedures, which led to marked destruction of the distal phalanx of the great toe of the right foot. After biopsy, the distal phalanx could not be preserved due to critical soft tissue involvement and the size of the process. Thus, we describe this rare entity to encourage clinicians to establish the diagnosis by biopsy of a tissue swelling of unclear origin and duration that does not resolve after a short time. Imaging examinations are useful in demonstrating periosteal involvement and extension of the lesion and can be helpful in the diagnostic algorithm. An interdisciplinary approach is a top priority to ensure optimal treatment.
Department of Dermatology, Saarland University Medical School, Homburg/Saar, Germany.
Cornelia Sigrid Lissi
CS
Müller
Institute of Pathology, Saarland University Medical School, Homburg/Saar, Germany.
Yoo-Jin
YJ
Kim
Department of Orthopedic Surgery, Saarland University Medical School, Homburg/Saar, Germany.
Katrin
K
Koch
Department of Diagnostic and Interventional Radiology, Saarland University Medical School, Homburg/Saar, Germany.
Günther
G
Schneider
Department of Dermatology, Saarland University Medical School, Homburg/Saar, Germany.
Claudia
C
Pföhler
Department of Orthopedic Surgery, Saarland University Medical School, Homburg/Saar, Germany.
Dieter
D
Kohn
Department of Dermatology, Saarland University Medical School, Homburg/Saar, Germany.
Thomas
T
Vogt
Bone Tumor Reference Center at the Institute of Pathology, University Hospital Basel, Basel, Switzerland.
Daniel
D
Baumhoer
D000328:Adult; D017824:Bone Cysts, Aneurysmal / Q000473:pathology*; D006801:Humans; D008297:Male; D009260:Nail Diseases / Q000473:pathology*; D014034:Toes / Q000473:pathology
aneurysmal bone cyst; aneurysmatic bone cyst; bone pathology; giant cell granuloma; subungual tumor