Table 2.
Patient radiology
| Patient | Date of imaging | Imaging | Description | Typical/Atypical |
|---|---|---|---|---|
| 1 | 08/31/87 | Radiograph | Partially mineralized parosteal lesion (3 × 4 mm) ulnopalmar aspect middle phalanx left little finger, separate from cortex | Typical |
| 02/06/89 | Radiograph | Partially mineralized recurrent lesion (7 × 6 × 6 mm) ulnopalmar aspect of middle phalanx of left little finger, contiguous with cortex but no cortical/medullary infiltration | Typical | |
| 2 | 11/16/92 | Radiograph | Predominantly ossified lesion (13 × 12 × 10 mm) palmar aspect of middle phalanx of left ring finger, unable to exclude intramedullary involvement owing to poor quality radiographs | Typical |
| 3 | 07/14/95 | Radiograph | Ossified parosteal lesion (22 × 15 × 9 mm) dorsomedial aspect of proximal phalanx right 2nd toe, contiguous with cortex but no cortical/medullary infiltration | Typical |
| 11/09/98 | Radiograph | Partially mineralized recurrent lesion (14 × 10 × 8 mm) dorsomedial aspect of proximal phalanx of right 2nd toe; no cortical/medullary infiltration | Typical | |
| 4 | 02/15/94 | Radiograph | Well-defined ossified lesion (9 × 7 × 4 mm) radiopalmar aspect of middle phalanx of right little finger, contiguous with cortex but no cortical/medullary infiltration | Typical |
| 5 | 09/08/94 | Radiograph | Well-defined ossified parosteal lesion (37 × 21 × 9 mm) anterior aspect of proximal tibia just below tibial tuberosity, contiguous with cortex; deep extension could not be ruled out; DD: BPOP, myositis ossificans, ossified hematoma osteochondroma, periosteal/soft tissue chondroma/chondrosarcoma, parosteal osteosarcoma | Typical appearance but atypical sight |
| 6 | 08/04/98 | Radiograph | Ill-defined partially mineralized lesion (6 × 4 mm) palmar aspect of middle phalanx of left little finger, contiguous with cortex, some irregularity of cortex; no medullary infiltration; DD: BPOP, periosteal chondroma/chondrosarcoma, parosteal osteosarcoma | Atypical owing to cortical irregularity |
| 7 | 04/12/00 | Radiograph | Irregular mineralized parosteal and paraarticular mass contiguous with distal phalanx of left little finger and DIPJ osteophytes; origin thought to be bone surface; DD: periosteal chondroma/chondrosarcoma, parosteal osteosarcoma, arthropathy | Atypical as contiguous with DIPJ osteophytes |
| 8 | 07/28/00 | Radiograph | Ossified surface lesion (15 × 9 mm) dorsomedial aspect of left 3rd toe, ? phalanx; cortex ill-defined; poor-quality radiograph | Atypical owing to ill-defined cortex |
| 9 | 01/25/02 | Radiograph | Soft tissue swelling dorsal aspect of 2nd MCPJ; no mineralization; inhomogeneous lesion (19 × 10 × 10 mm) dorsal aspect of 2nd MC contiguous with cortex; cortical surface irregularity. | Atypical owing to cortical surface irregularity |
| 06/18/02 | MRI | Inhomogeneous lesion (19 × 10 × 10 mm) dorsal aspect of 2nd MC contiguous with cortex; cortical surface irregularity | ||
| 10 | 12/13/00 | Radiograph | Predominantly mineralized lesion (28 × 18 × 25 mm) ulnar aspect proximal phalanx of left index finger with early cortical scalloping; DD: periosteal chondroma/chondrosarcoma, parosteal osteosarcoma | Atypical owing to cortical scalloping |
| 11/14/02 | Radiograph | Recurrent lesion at same site and similar size but more lucent with sclerotic shell attached to cortex; no medullary infiltration | ||
| 11 | 08/27/06 | Radiograph | Mineralized lesion (12 × 9 mm) dorsal aspect of 2nd/3rd toe interspace contiguous with 2nd MT metaphysis | Typical |
| 01/30/07 | Radiograph | Lesion increased in size (25 × 14 mm) with periosteal reaction of 2nd MT shaft | Atypical owing to periosteal reaction | |
| 01/30/07 | MRI | Lesion (20 × 15 × 14 mm) dorsal aspect of 2nd MT neck with 5-mm cortical breach with underlying medullary edema and periosteal reaction | Atypical owing to periosteal reaction/cortical breach/medullary edema | |
| 12 | 12/10/07 | Radiograph | Completely mineralized lesion (10 × 11 × 12 mm) radiopalmar aspect of proximal phalanx of left little finger contiguous with cortex but no infiltration of cortex or medulla | Typical |
| 13 | 12/15/07 | Radiograph | Predominantly mineralized lesion (4.5 × 3.5 × 3.5 mm radial aspect of middle phalanx of left ring finger contiguously fused with cortex but no cortical infiltration; small central areas of nonmineralization | Typical |
DD = differential diagnosis; BPOP = bizarre parosteal osteochondromatous proliferation; DIPJ = distal interphalangeal joint; MCPJ = metacarpophalangeal joint; MC = metacarpal; MT = metatarsal.