Abdominal-wall myositis secondary to intra-arterial chemotherapy for femoral osteosarcoma.

[focal myositis]

With the increasing application of intra-arterial chemotherapy (IAC ), new side-effects are encountered . We describe two children with proximal femoral osteosarcoma who developed focal myositis of the abdominal wall musculature after IAC . In both cases , myositis presented as abdominal pain and mimicked acute abdomen . US demonstrated asymmetrical thickening of abdominal -wall musculature in the right lower abdomen . This diagnosis should be considered when evaluating the patient with unexplained abdominal pain and a history of IAC .

Diseases
Validation

Diseases presenting "abdominal pain" symptom

22q11.2 deletion syndrome

adrenal incidentaloma

alpha-thalassemia

benign recurrent intrahepatic cholestasis

carcinoma of the gallbladder

child syndrome

cholangiocarcinoma

congenital diaphragmatic hernia

cushing syndrome

cutaneous mastocytosis

cystinuria

dedifferentiated liposarcoma

erdheim-chester disease

erythropoietic protoporphyria

fabry disease

familial hypocalciuric hypercalcemia

familial mediterranean fever

focal myositis

liposarcoma

lymphangioleiomyomatosis

malignant atrophic papulosis

pleomorphic liposarcoma

primary effusion lymphoma

primary hyperoxaluria type 1

proteus syndrome

scrub typhus

sneddon syndrome

systemic capillary leak syndrome

typhoid

von hippel-lindau disease

well-differentiated liposarcoma

This symptom has already been validated