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Acute appendicitis is the most common appendiceal disease leading to the surgical excision of the organ. We report four cases of fibrous obliteration of appendix / appendiceal neuroma presented as acute appendicitis on ultrasonography (USG). Due to similar clinical symptoms and USG findings, fibrous obliteration of the appendix can easily be mistaken as acute appendicitis.

Renal replacement lipomatosis (RRL) is a rare condition that occurs as an end result of renal atrophy or replacement of renal parenchyma by excessive lipomatous tissue in renal sinus and perinephric space. We reported a case of RRL presented in our tertiary health centre. Left Nephrectomy was performed kidney sent to our department for histopathology examination and after extensive literature search, a diagnosis of RRL was given. In majority of cases, RRL is associated with renal calculi. Idiopathic variety of RRL is not common. It is a rare entity and due to lack of experience the diagnosis may be missed. It has to be differentiated from other fat-containing tumors such as xanthogranulomatous pyelonephritis, renal lipomas, liposarcoma and angiomyolipoma.

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