Acute calculous cholecystitis in patient with osteopetrosis

The patient was known as "autosomal dominant osteopetrosis" which explains the patient's survival to the adulthood. Autosomal dominant osteopetrosis is the less severe type of osteopetrosis.

Here, in this case, there are typical features of osteopetrosis, such as:

• Diffuse thickening and sclerosis of the examined bones with the typical "bone within a bone" appearance and "sandwich vertebrae".
• Pathological fractures of the ribs, both femora, L4 & L5 pars.
• Hepatosplenomegaly is secondary to extra-medullary hematopiosisextramedullary hematopoiesis.

The gallbladder is distended showing a large radiodense stone witinwithin its neck, asscioatedassociated with diffuse mural thickneingthickening and enhnacmentenhancement. Mild pericholecystic fluid and fat plane smudging is also noted. This is impressive of "acute calculous cholecystitis"

Hepatosplenomegaly.

Widespread bone thickening and dense osteosclerosis showing the classical bone within a bone. Bilateral pathological fractures of the ribs, both femoral necks, right femoral shaft, L4, and L5 pars interarticularis.

Erlenmeyer flask type deformity of both femora.