Tumoral Calcinosis of hip: MDCT and imaging findings

Paran T, Nemu T. Tumoral Calcinosis of hip: MDCT and imaging findings. Case Study and Case Report 2020; 10(4): 36 - 40. ABSTRACT Tumoral calcinosis (TC) is a rare disease characterized by large calcific soft tissue deposits occurring predominantly in the juxta-articular regions of the extremities.We report a case of TC located to hip with MDCT and MRI findings. A 48 year old male was referred for pain, swelling and cutaneous flow at the left hip. He was operated 8 and 5 years ago for pain and swelling of left hip previously. On physical examination limited range of motion of left hip and two cutaneous fistula were noticed. Multidetector row-computed tomography(MDCT) and magnetic resonance imaging(MRI) examinations were performed. On MDCT, multiple calcifications located in all muscles neighboring to left hip were detected. On MRI multiple globular soft tissue deposits located at the paraarticular muscles appeared hypointense in all sequences.On contrast enhanced images, a strongly enhanced mass was noticed in soft tissues outer these deposits. Also several fistula tracts elonging from this mass to skin were imaged. Serum calcium level and renal function tests were normal.According to these finding the diagnosis was TC. TC is a rare disease characterized by large calcific soft tissue deposits occurring predominantly in the juxta-articular regions of the extremities. Deposits consist of pleomorphic calcium phosphate (hydroxyapatite) crystals.On physical examination TC are noticed as palpable paraarticular masses without pain during the artıcular movement. Recurrence is common in the event of incomplete resection. Radiologic diagnosis is essential to avoid unnecessary examination and invasive procedure and to evaluate treatment.TC should be differentiated from other antities that causes soft tissue calcifications.TC should be kept in mind as a differential diagnosis in patients with a dense calcific mass in soft tissue. Key words: Tumoral calcinosis, computed tomograpy, magnetic resonance