DZI20-137: BST

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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)

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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)