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Case Study

Case No. 22: Malignant Fibrous Histiocytoma

Report Of Malignant Fibrous Histiocytoma: A lateral radiograph reveals a large soft tissue mass in the posterior thigh with a pathologic fracture involving the midshaft of the femur. A transaxial CT scan bone window clearly shows the extent of bone destruction and separation of the anterior cortex from the posterior cortex due to the pathologic fracture. Osseous debris is scattered …

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Case No. 21: Aggressive Giant Cell Tumor

Modality: X-Ray Knee Report Of Aggressive Giant Cell Tumor: A highly destructive osteolytic lesion obliterates the cortical and the medullary bone of the entire metaphysis and subchondral region of the distal portion of the femur. The matrix of the lesion is purely osteolytic, and a pathologic fracture with angulation is seen. A large soft tissue mass is evident. Marked osteopenia …

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Case No. 20: Round Pneumonia

Case No. 20 Round Pneumonia - AP view

Modality: Chest X-ray (PA & lateral view) Description: The frontal and lateral chest radiographs show a partially ill-defined rounded left lower lobe opacity with an apparent base on the posterior pleura. Diagnosis: Round Pneumonia Key Points: Round pneumonia could have variable sizes and appears classically in the posterior portions of the lower lobes. This process respects the lobar anatomy and …

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Case No. 19 Calyceal Diverticulum

Case No. 19 Calyceal diverticulum

Modality: IVU. Description: A small area of pooling of contrast noted adjacent to upper pole calyceal system. Normal appearing pelvicalyceal system. Diagnosis: Calyceal diverticulum. Key Points: The term calyceal diverticulum or pyelocalyceal diverticulum refers to a urine-containing cystic cavity within the renal parenchyma. Calyceal diverticula containing calculi remain an uncommon urological condition, although when present are frequently symptomatic. It is …

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Case No. 18: Leptospirosis – Bacterial Infection

Spotter No 2: Leptospirosis

Modality: CT Chest, Lung window, axial views. Description of Case No. 17: CT scan lung window shows patchy alveolar infiltration, ground-glass attenuation, interlobular septa thickening, ill-defined small nodular hyper-attenuating areas. Differential Diagnosis: Acute eosinophilic pneumonia Non-specific interstitial pneumonia Leptospirosis Pulmonary edema Pneumocystis pneumonia Cytomegalovirus pneumonia Diagnosis: Leptospirosis Key Points: Leptospirosis results from infection of the zoonoses Leptospira sp. Leptospirosis is …

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Case No. 17: Melorheostosis – Mesenchymal Dysplasia


Modality: X-Ray Knee Description of Case No. 17: Cloudlike accumulations of hyperostosis and soft tissue ossification also are seen adjacent to the distal portion of the femur and the proximal portion of the tibia. Diagnosis: Melorheostosis Key Points: Melorheostosis is also referred to as Leri disease. is an unusual mesenchymal dysplasia manifesting as areas of sclerosing bone with a characteristic …

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Case No. 16: Paget’s Disease

Case No 16 Paget’s disease

Modality: X-Ray Tibia/Fibula (Lateral view) Description: Lateral x-ray of tibia/fibula reveals bony expansion, anterior bowing of the tibia with cortical thickening and trabecular coarsening. No cortical break or periosteal reaction noted. Diagnosis: Paget’s disease Key Points: Paget’s disease (osteitis deformans) is a common, metabolic bone dysfunction characterized by excessive abnormal bone re-modelling. It largely impacts the pelvis, spine, skull and long …

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Case No. 15: Ollier’s Disease – Multiple Enchondromas

Case No 15 Ollier’s Disease - Multiple Enchondromas

Modality: X-Ray Hip. Description: Multiple non-expansile mixed types of lesion noted over both ilium, around both sacroiliac joints and both proximal femora. No fracture is seen. Both hip joint spaces are normal. Diagnosis: Ollier’s Disease – Multiple Enchondromas Key Points: Ollier’s disease primarily affects the long bones and cartilage of the joints of the arms and legs, specifically the area …

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Case No. 14: Enchondroma – Benign Bone Tumor

Case No 14 Enchondroma

Modality: X-Ray Of Hand. Description: X-ray of hand show intramedullary lucent lesion with chondroid calcification occupying the entire shaft of the 1st metacarpal bone. No cortical break or periosteal reaction noted. Differential Diagnosis: Low-grade chondrosarcoma. Bone Infarct. Intraosseous ganglion. Sarcoidosis. Tuberculosis. Diagnosis: Enchondroma Key Points: Enchondromas are common benign medullary cartilaginous neoplasms. Ollier disease and Maffucci syndrome are associated with …

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Case No. 13: Fibrous Dysplasia

Case No. 13: Fibrous Dysplasia

Modality: X-Ray Femur (Lateral view) Description: Lateral x-ray of femur shows anterior bowing of the femoral shaft with slight bony expansion and a long intramedullary diaphyseal radiolucent lesion with expansile remodeling and endosteal scalloping with hazy “ground-glass” appearance and some focally calcified matrix. No cortical break or periosteal reaction noted. No surrounding sclerosis was seen. Differential Diagnosis: Paget’s Disease Fibrous dysplasia …

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