KUMADA, KAORU

MINAMI, KAZUAKI

MORI, KEIICHIRO

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Title Echocardiographic Findings of Renal Cell CarcinomaExtending into the Right Atrium via the Inferior Vena CavaAuthor(s)MINAMI, KAZUAKI; KUMADA, KAORU; MORI,KEIICHIROCitation日本外科宝函 (1985), 54(4): 281-288Issue Date1985-07-01URL http://hdl.handle.net/2433/208706RightType Departmental Bulletin PaperTextversionpublisherKyoto UniversityArch Jpn Chir 54(4), 281～288, 1985 Echocardiographic Findings of Renal Cell Carcinoma Extending into the Right Atrium via the Inferior Vena Cava KAZUAKI :¥[J:¥.'.MI,* KAORL' KUMADA料 andKEIICHIRO :¥TORI料*Department of Cardiovascular吋urgery,Otsu Red Cross Hospital ＊ネThe2nd Department of Surgery, Facultv of :¥ledicine. Kyoto University Received for Publication, Apr. 30, 1985. Abstract ¥"e encountered a 60 year-old female with Grawi旬、 tumor(hypernephroma) that extended into the right atrium and right ventricle via the inferior vena cava. At the first operation、atumor originating in the right kidney was resected en bloc司 butthe metastatic tumor extending into the inferior vena cava and right atrium could not be removed. This tumor was observed echo-cardiographically for two years postoperatively until the patient died of pulmonaηr aspergillosis. Thi' paper describes the changes in the echocardiographic findings of this patient. Introduction In approximately 5 per cent of the reported nephrectomies for renal cel carcinoma‘the in-ferior vena rava is involved by direct vascular tumor thrombus extension3>. The incidence of extension into the right atrium in these patients ranges from 14 to 41 per cent1,5•7l. We encountered a cas巴inwhich Grawitz’s tumor extended into the right atrium and right ventricle via the inferior vena cava. ¥Ve present the echocardiographic findings of this patient. Report of a Case A 60-year-old female had been healthy until the beginning of June, 1981, when she ex-perienced slight edema in the legs, which increased on ex巴rtion;she was effectively treated with diuretics. One month later, the patient suffered from discomfort in the right hypo「hondrialregion, poor appetite, general malaise and dyspnea on exertion. L'pon admission on July 25, 1981, an elastic hard tumor (5×9 cm) with an irregular surface and sharp margin was palpable below the right costal margin. The liver was palpable below the xyphoid process, but the spleen and left kidney were not palpable. CT scan showed an abnormal mass (approximately 8 cm in diameter) above the right kidney. The renal vein and inferior vena cava were observed with tumor thrombus. The portal and hepatic veins were dilated. Chest CT scan revealed a sub-Key wo山 Renalcel carcinoma, Extension, Tumor thrombus, Echoca凶索引語：腎細胞癌，伸展，腫蕩血栓，心エコー法，右心房．子dres: Department of Ca吋iovaseularSurgery, Otsu Red （川、 Hosp1叫 :"lagaral・l缶， OtsuShi伴l520 Japan. 282 日外宝第54巻第4号（昭和60年7月）pleural shadow in the right middle lobe of the lung司 stronglysuggesting metastatic tumor. Two-dimensional echocardiography (Toshiba SSH-llA‘2.25 l¥IHz transducer) revealed a tumor protruding into the right atrium from the inferior vena cava. The other cardiac自ndingswere within normal limits. On August 12. 1981‘the tumor and right kidnev. which were indistinguishable, were resected; the combined ma同（7×9×15cm) weighed 450 g. ~ o metastasis to the liver or peritoneal dissemination was noted. After resection of the tumor. inferior vena cava involvement was observed from the ori五ceof the divided right renal vein. The tumor was attached to the intima of the inferior vena cava. resulting in obstruction of blood flow. Thus、京trippingof the tumor thrombus was impossible due to the risk of pulmonary embolism. The left renal vein, was also occluded by the tumor. Anticancer emulsion was injected into the丘djacentlymph nodes and occluded inferior vena cava. Postoperative course was uneventful and the patient was discharged on September 12唱1981.A follow-up echocardiographic examination one month later、revealedan intracardiac tumor extending into the right ventricle through the right atrium (Figs. 1 and 2). Changes in size of the intracardiac tumor, were observed echocardiographicalhァevery2 3 months. The size of the tumor was maximal on August 5, 1982 (Fig. 3), and thereafter decreased （白g.4). Subsequent echocardiography showed moderate pericardial effusion with an anterior free space of 10 mm. At this time low cardiac output syndrome clinically appeared. One month later, both pleural effusion and leg edema disappeared. However, a new tumor (3.0×3.5 cm) on the left renal pole was detected by CT scan, on September 7. 1982. The new tumor gradually enlarged, whereas the intracardiat、tumorshowed no change. Reoperation was performed on February 25‘1983. The abdominal tumor occupied the region bordered by the tail of the pancreas喝 theabdominal aorta‘and the upper pole of the left kidney. Total resection of the tumor was not possible because of the patient’s general condition. Puncture of the 〈γ、ticcentral portion of the tumor yielded a dark red fluid、suggestiveof central necrosis. The encapsulated tumor was inci将 dand as much of the tissue as possible was removed. Anticancer emulsion was injected into the remaining tumor and adjacent lymph nodes. Inter-estingly, no recurrence of the tumor was found near the area previously occupied by the right kidney or the inferior vena cava. Because of renal failure, dialysis was started on June 1, 1983‘with daily urination of 300 ml. One week later, urination increased to more than 1000 ml a day. However‘she died of respi-ratory failure on July 2. Autopsy revealed that the pulmonary lesions diagnosed as a metastatic tumor were foci of aspergillosis. The left kidnev was encompassed by Grawitz's tumor. Liver metastasis was also noted. The intracardiac tumor entering into the right ventricle through the tricuspid valve caused dilatation of the right ventricle and pericardial effu日ion.which in turn、resultedin paradoxical movement of the intervcntricular septum and low cardiac output syndrome. Tumor echo was similar to that seen in myxoma; however, the echo strength of the encapsulated surface was more intensive. The motion of the tumor resembled that of myxoma despite the absence of stalk. （ ?? ?【?????????（）???、 「 ?? ?? ） ????】??「）??????????〉↓『???????'I wo-dimens1ona I ec he川 rclio日ramsobtained frc》m¥・ariom、approaches一xy1》hoidιapproa「h(1 and 2) ar 孔pie、fourch；ミnT: tumor, RA: ri宮htatrium, LA let atrium, !¥'(' inferior、ena《川社， RV right、entricle,L ＼＇・ left¥'entriclc Fig. 1. ???????????? ?? ?（ ? ? ? 。 ? ? ? ? ? 〉¥I mod~ echocardiogram~ ;how a group of multiple linear echoes similar to those seen in myxoma in the right atrium (1) and the out自O¥'tract of the right 、entriclc(2l. The motion of the intcrventricul川町ptum;, paradoxical "・ith cnlar耳edright ventric、leand small left 刊 ntnclc(3 and 4). PE pcri《nrdial c仔u• ion, RA: right atrium R ＼ー n宮ht¥・entncle LA. left atnum, JVC、：nterventricular同 ptum，人n .1ort‘a, _¥] ¥.: m1tral rnlvc Fig. l. 285 ???????）?＝＝???」?????????????????????????????????）?【?????＝》』??《???????????????????????』?????????????「?????????｝?????〔???????＝?????????，?????〈??????????．?．????GRA¥¥'ITS'S Tl':¥!!lR EXTE:¥I>J¥(; l:¥TC> THE RH;HT ATRil"¥I 」286 Fig. 4. 日外宝第54巻第4号（昭和60年7月）Changes in size of the tumor observed by two-dimensional echocarciography on the following days: 1, 8・30-1981; 2, 6-3-1982; 3, 8・5-1982;4, 11-30-1982 and 5, 6-14・1983. RA: right atrium、RV:right ventricle, LA: left atrium, T¥" tricuspid valve, IVC: inferior vena cava, RV: right ventricle, LV: left ventricle司；＼］¥" mitral valve The tumor extending into the right ventricle through the tricuspid valve moved from the right atrium to the right ventricle on diastole‘and returned to the right atrium on systole. Moreover‘ contrast echocardiography revealed slight tricuspid regurgitation. Discussion In general, patients with renal cel carcinoma extending into the inferior vena cava have an extremely poor prognosis. However, the outlook for the patient with only venous extension of tumor without perinephric fat or regional node involvement is considerably better than has been previously thought. The 5-and 10-year survival rates of these patients are 55 and 43 per cent, respectiveJyG>. In our case『however,regional node involvement and pulmonary metastasis were strongly suspected from the CT scan findings. In addition, extension into the right atrium was noted by echocardiography. Therefore, this patient was not suitable for the aggressive surgical approach, and instead, palliative surgery was performed, combined with local chemotherapy during surgery using anticancer emulsion. Based on :¥I-mode echocardiographic findings on intracardiac renal cel carcinoma, F AROOKI 2>reported a patient with Wilms’tumor that extended into the right atrium via the inferior vena cava. :¥IczcsttcGE4> reported one case of renal cel carcinoma that extended into the right atrium, emphasizing some two-dimensional echocardiographic findings: 1) uniformity in echo汎rength.2) clear contour of the tumor and 3) passage through tricuspid valve during the cardiac cvcle. Since the first operation司 anintracardiac tumor and renal cdl carcinoma in the renal region were observed by two-dimensional echocardiography and CT scan、respectively. Slight tricuspid regurgitation, also noted by contrast echocardiograph）ヘ wassimilar to that found in presence of right atrial myxoma. The吋urfaceof the tumor was relatively smooth、suggestingthe presence of a capsule. The tumor was attached to the inferior vena cava and extended to the right c;RA\\.IT~ 、 S 'IT¥IOR EXTE'.¥DI'¥C !'.¥!TO THE RIGHT .¥TR!l.¥l 287 ? ????????守t.；臨4' ． Fi邑.5目 Autop＂＇品nd11g>s¥・c ぉuperior、cnoC司、～l ¥ C inkrior、丸・na仁川a,l{A right atrium, r¥・ 1 icu-spid velve, App: right atrial appendage atrium司wherean unattached "L" shaped tumor passed through the tricuspid valve (Fig. 5). Compared to the intracardiac tumor the new tumor in the left renal region grew very rapidly, becoming 7×8×9 cm in about one year. This suggests that there is a limitation in the growth of intracardiac renal cell carcinoma. In fact『asautopsy revealed, central necrosis was found in the top portion of the encapsulated tumor. Therefore, in some cases‘extensive surgical inter-vention may not always be necessary for patients in whom total tumor resection is impossible. References l) Arkless R: Renal carcinoma; how it metastasizes. Radiology 84: 496-501, 1965. Z) Farooki ZQ, Henry JG, et al: Echocardiographic diagnosis of right atrial extension of Wilmピtumor. Am J Cardiol 36: 363 367, 1975. 288 日外宝第54巻第4号（昭和60年7月）3）九lar只hallYF. ¥liddlecton RG, et al: Surgery for renal cel carcinoma in the wna cava. J Urol 103: 414-420 . 1970 4) l¥lizushige k、KodamaK. et al: Echocardiographic五ndingsin a case of renal cel carcinoma with tumor thrombus extending into the right atrium. Jpn J Med Ultrasonics 11: 37-40, 1984. 5) :¥ ey C: Thrombosis of the inferior vena cava associated with malignant renal tumors. J U rol 55: 583-590, 1946. 6) Skinner DG, P品sterRF, et al: Extension of renal cel carcinoma into the vena cava; the rationale for aggres-、l刊 surgicalmanagement. J C rol 107: 711-716, 1972. 7) Svans S Tumor thrombus of the inferior vena cava resulting from renal carcinoma; a report on 12 autopsied rases. Scand J Crol Nephrol 3: 245 256, 1969. 和文抄録下大静脈を経て右房内へ伸展発育した腎細胞癌腫蕩血栓の心エコー所見大津赤十字病院心臓血管外科南 一明京都大学医学部外科学教室第2講座熊田 馨，森敬一郎60歳，女性，右腎原発 Grawitz腫蕩は，下大静脈を経て省心房内に侵入．最大時には，拡張期lζ右心室の%を占めるまでに成長した．初回手術では，腫蕩を含む右腎全摘出を行い，下大静脈の腫蕩血栓はそのまま放置した. 2回目手術では，左副腎周囲の再発癌の摘出を行なった．初回手術前から肺アスペjレギlレス症で死亡するまでの 2年間，心エコー法で心内腫場を追跡観察し得た．その心エコー所見及び大きさの変遷を報告する．

下大静脈を経て右房内へ伸展発育した腎細胞癌腫瘍血栓の心エコー所見

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下大静脈を経て右房内へ伸展発育した腎細胞癌腫瘍血栓の心エコー所見

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