Bone and Soft Tissue Pathology — MCQs

Cambium layer is seen in which of the following conditions?

A 26-year-old, previously healthy man sustains blunt force trauma to the left upper arm. On physical examination, there is focal swelling and redness. Three weeks later, the superficial contusion has resolved, but now a slightly tender mass is palpated in the outer aspect of the upper left arm. A radiograph of the left arm shows a 5-cm mass in the soft tissue. There is a radiolucent center and surrounding irregular bone formation. One month later, the mass is now 3 cm and painless. CT scan of the arm shows a well-circumscribed mass within muscle with areas of bright calcification throughout. What is the most likely diagnosis?

A 30-year-old male presents with a swelling on the left side of his lower jaw, with no prior surgical history. On examination, facial asymmetry is noted, and a bony hard swelling is palpable. Polarized light microscopy reveals apple-green birefringence of amyloid deposited in the fibrous connective tissue stroma. What is the most probable diagnosis?

The diagnostic triad of exophthalmos, diabetes insipidus, and bone lesions is characteristic of which condition?

Which of the following special stains can be used for the diagnosis of rhabdomyosarcoma?

Primary sclerosing cholangitis is likely to be associated with which of the following malignancies?

Which of the following is the most common soft tissue tumor in adults?

CD-99 is a marker of which of the following neoplasms?

Which of the following is a true cyst?

Expansile lytic osseous metastases are characteristic of primary malignancy of which organ?