A case of localized ureteral amyloidosis / 中华泌尿外科杂志

Localized ureteral amyloidosis is a rare disease clinically and radiographically similar to ureteral carcinoma. We reported a 56-year-old man with painless gross hematuria. CT and Magnetic resonance urography (MRU) examinations showed tumor signs and ureteral amyloidosis was diagnosed by ureteral biopsy. Laparoscopic partial ureterectomy combined with boari flap was performed and the patient's renal function was preserved. There was no local recurrence and distant metastasis during the 1-year follow-up.

Soft‑tissue amyloidoma with associated plasmacytoma.

Soft tissue amyloidoma with features similar to plasmacytoma, in absence of systemic amyloidosis, is an extremely rare finding. We hereby report the case of a 77 year old man who presented with a painless, nodular swelling on chest wall, diagnosed as soft tissue amyloidoma with plasma cell infiltration. Congo red staining was done to prove the presence of amyloid which showed characteristic “apple‑green” birefringence on polarized microscopy. The plasma cells were monoclonal in origin as demonstrated by serum protein and immunofixation electrophoresis. To the best of our knowledge, this is the second such reported case. However close follow up is required, as this patient may develop multiple myeloma in future.

Soft Tissue Amyloidoma of Upper Extremity: A Case Report

Amyloidoma is a solitary tumor characterized by localized deposition of amyloid in the absence of systemic amyloidosis. Soft tissue amyloidoma is rare and occurs most often in the mediastinum and retroperitoneum. Especially, soft tissue amyloidoma of the extremities is exceedingly rare and only 2 cases has been reported in the upper extremity. We report a patient with soft tissue amyloidoma in the upper extremity.

Calcific Amyloidoma of Tibialis Anterior Muscle: Case Report / 대한정형외과학회잡지

Calcific amyloidoma of the soft tissue is quite rare and it is difficult to make a differential diagnosis from other lesions such as osteomyelitis or bone tumor. We encountered a case of a calcified amyloidoma found in the anterior tibial muscle that occurred more than 20 years after a proximal tibial fracture adjacent to the origin of the muscle. The features of the lesion resembled osteomyelitis. Satisfactory result was obtained by a thorough mass excision. We report this case with review of the relevant literature.