Virtual Slidebox
Presented by the MGH Pathology Service

No history

Clinical history

30 y/o female with a nasal mass

Immunohistochemistry

Large mass in extremity of young child

No history

46 y/o woman with a forearm mass

55 y/o woman with a thigh mass

Clinical summary
10 yo with slowly growing, painless mass of finger

Toe lesion in young child

AKA: Calcifiying fibromatosis

Large rib lesion in newborn

33 y/o man with a large thigh mass

No history

51 y/o female with an extradural mass of the C2 vertebra

Rapidly growing mass in orbit of young child

No history

No history
Syndrome: Autosomal dominant osteopoikilosis

Clinical summary
41 y/o male with a history of finger trauma and chronic pain

53 y/o female with a chest wall mass, remote history of Hodgkin lymphoma

Adolescent female with a wrist mass

Female in her 50’s with a rapidly growing mass in deep soft tissue of thigh

Clinical summary
35 yo woman with thigh mass

Clinical summary
50 yo with a thigh mass

42 y/o female with an expansile mass of the anterior fourth rib

Clinical summary
11 month old with subcutaneous mass of upper arm

Axillary lesion in 6 month old child

Male in his 60’s with a 1 cm nodule on dorsal surface of right foot. FNA yielded 1 ml of mucoid material

No history

No history

29 y/o woman with a thigh mass

Mass of distal toe in 3 month old.

AKA: Inclusion body fibromatosis

Leg mass in deep soft tissues of young child

Tibial mass in 4 month old boy

Clinical summary
15 yo with mesenteric mass

Bedridden elderly man with a rapidly growing mass over greater trochanter

Male in his 60’s with a chest wall mass

No history

No history

57 y/o male with a lumbrosacral mass for 10 years

57 y/o male with a lumbrosacral mass for 10 years

No history

23 y/o male with an NF1 mutation and intrathoracic masses

No history

61 y/o woman with a thigh mass

Rapidly growing mass in pelvis of 2 year old

Clinical summary
55 yo man with a thigh mass

53 y/o female with a subcutaneous shoulder mass

40 y/o woman with a calf mass

Clinical summary
45 yo woman with 3 cm finger mass