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We present two cases of subcutaneous hematoma in which color Doppler US revealed colored areas under probe compression, and Doppler waveforms obtained from these areas changed rapidly (from a constant flow to a pulsatile flow, and from a high-velocity flow to a slow-velocity flow) according to the degree of probe compression. In our cases, a sufficient number of blood cells within the lesion moving under probe compression was thought to give rise to Doppler signals and changes in Doppler waveforms.

There is a marked paucity of reports on contrast-enhanced ultrasonography (US) for focal splenic disease in the literature, and there are no previously reported contrast-enhanced US findings for splenic granuloma. We report the case of a 77-year-old cirrhotic woman with isolated splenic granulomas. We detail the diagnostic difficulty encountered in this case and briefly review the literature.

高齢者においてはビタミンB12 (以下VitB12) の組織内欠乏は明らかでも血清VitB12の低下を示さないことがあるといわれている. 症例は71歳男性, 亜急性の歩行障害で発症, 血清VitB12値正常であったが, 脊髄MRIにて頸髄～上部胸髄, 下部胸髄, 腰髄の後索, 両側索に高信号域を認め, 血清, 尿中メチルマロン酸値上昇にてVitB12組織内欠乏による亜急性脊髄連合変性症 (subacute combined degeneration : SCD) と診断した. VitB12投与により症状は軽快し, 杖歩行が可能となった.

We present a rare case of isolated liver metastasis from renal cell carcinoma 12 years after complete resection of the primary site. Such abnormal behavior of renal cell carcinoma has been reported elsewhere in the literature; thus, careful long-term surveillance should be performed in patients with a past history of renal cell carcinoma, even after radical resection of the primary site. We present also contrast-enhanced sonographic findings for this case.