DZI20-137: BST

From MGH Learn Pathology

Request type Study
Subspecialty Bone and Soft Tissue
Set Frozens Study Set 2020
Topic BST
Presenter NS495 (user needs to log in to Learn Pathology)


Toggle columns: Diagnosis

Case Clinical history Requester Diagnosis
Case Clinical history Requester Diagnosis

Case 1

36 yo F with left fourth toe mass null Fibroma of tendon sheath versus collagen fibroma (permanent dx: collagenous fibroma)

Case 2

60 yo M left shoulder mass null Spindle cell lipoma

Case 3

75 yo M with left distal femur mass null Malignant neoplasm (permanent dx: diffuse large B-cell lymphoma)

Case 4

45 yo M with history of invasive ductal carcinoma now with left iliac lesion null Metastatic carcinoma (permanent dx: metastatic carcinoma consistent with mammary primary)

Case 5

73 yo M with right calf mass null Schwannoma

Case 6

25 yo F with right finger mass null Giant cell tumor of bone

Case 7

47 yo M with 1.8 cm soft tissue lesion at anterior/medial aspect of distal tibia null Granulomatous inflammation and fibrosis (permanent dx: Subcutaneous tissue with histiocytic inflammation fibrosis fat necrosis perivascular lymphocytic infiltrate and dystrophic calcifications; there is no evidence of malignancy)

Case 8

30 yo F with 10.5 cm heterogenous anterior compartment thigh mass undergoing resection; noted to have soft tissue mass on lower abdominal wall during surgery null Endometriosis

Case 9

66 yo F with 14 cm sacral mass destructive with extensive extraosseous tumor extension null Plasma cell neoplasm with abundant amyloid

Case 10

33 yo M with rapidly enlarging right thigh mass null Subcutaneous nodule with marked acute and chronic inflammation and atypical stromal cells most suggestive of myxoinflammatory fibroblastic sarcoma

Case 11

44 yo F with 5 cm sacral mass null Chordoma

Case 12

41 yo F with 6.7 cm right thigh mass null Myxoma

Case 13

42 yo F with NF1 with T9/T10 mass null Neurofibroma (permanent dx: diffuse neurofibroma)