Case Of the Week (COW) 15 Mar 2015
GLOMUS TUMOR OF THUMB
Findings
DOPPLER : well defined hypoechoic mass lesion noted in the subungual region of thumb with increased vascularity with adjacent erosion of the underlying phalangeal bone . MRI : evidence of well defined T1 hypointense T2/STIR hyperintense lesion noted in the subungual region of thumb . Clinical features of pain , imaging findings highly consistent with GLOMUS TUMOR OF THUMB
Discussion
Rare benign tumor of the glomus body Glomus bodies are highly concentrated in the digits , palms, soles of the feet Clinical manifestations- pain, intense tenderness & discoloration . Glomus tumors can affect any part of the body 75% occur in the hand and approximately 65% occur in the fingertips particularly in the subungual region The high velocity flow in intratumoral shunt vessels causes the lesion to be hypervascular at color Doppler imaging. D/D: 1.HEMANGIOMA: Imaging features similar to glomus tumor but it has a more superficial location in the papillary dermis and epidermis 2.SUBUNGUAL EXOSTOSIS: USG- hyperechoic lesion with well defined margins & calcification with hypovascularity in Doppler.MRI – hypointense in all sequences 3.SOFT TISSUE CHONDROMA: USG- hypoechoic mass with foci of calcification with salient vascularity
Contributed By:
Prof. S. Babupeter, Dr. Mubarak
Barnard Institute of Radiology
GLOMUS TUMOR OF THUMB
Findings
DOPPLER : well defined hypoechoic mass lesion noted in the subungual region of thumb with increased vascularity with adjacent erosion of the underlying phalangeal bone . MRI : evidence of well defined T1 hypointense T2/STIR hyperintense lesion noted in the subungual region of thumb . Clinical features of pain , imaging findings highly consistent with GLOMUS TUMOR OF THUMB
Discussion
Rare benign tumor of the glomus body Glomus bodies are highly concentrated in the digits , palms, soles of the feet Clinical manifestations- pain, intense tenderness & discoloration . Glomus tumors can affect any part of the body 75% occur in the hand and approximately 65% occur in the fingertips particularly in the subungual region The high velocity flow in intratumoral shunt vessels causes the lesion to be hypervascular at color Doppler imaging. D/D: 1.HEMANGIOMA: Imaging features similar to glomus tumor but it has a more superficial location in the papillary dermis and epidermis 2.SUBUNGUAL EXOSTOSIS: USG- hyperechoic lesion with well defined margins & calcification with hypovascularity in Doppler.MRI – hypointense in all sequences 3.SOFT TISSUE CHONDROMA: USG- hypoechoic mass with foci of calcification with salient vascularity
Contributed By:
Prof. S. Babupeter, Dr. Mubarak
Barnard Institute of Radiology