1996
DOI: 10.1159/000196555
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Extragonadal Nongestational Choriocarcinoma Involving the Lung: A Report of Three Cases

Abstract: Primary choriocarcinoma of the lung is an extremely rare tumour, with about 20 cases reported in the literature. The case records of 3 female patients with nongestational, extragonadal choriocarcinoma apparently arising in the lung are presented to illustrate its clinical spectrum, the utility of serum beta human chorionic gonadotropin, and responsiveness to chemotherapy. Most plausible origins of these malignancies and differential diagnosis are briefly discussed.

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Cited by 19 publications
(20 citation statements)
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“…It is hypothesized that primary choriocarcinomas derive from neoplastic transformation of misplaced primordial germ cells [15]. The tumors could also represent metastatic lesions from an occult primary gonadal neoplasm undergoing spontaneous regression [11,22]. A neoplastic transformation of pulmonary placental emboli from a previous vesicular mole, term pregnancy, abortion or ectopic pregnancy months or years before also seems possible [3,22].…”
Section: Discussionmentioning
confidence: 99%
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“…It is hypothesized that primary choriocarcinomas derive from neoplastic transformation of misplaced primordial germ cells [15]. The tumors could also represent metastatic lesions from an occult primary gonadal neoplasm undergoing spontaneous regression [11,22]. A neoplastic transformation of pulmonary placental emboli from a previous vesicular mole, term pregnancy, abortion or ectopic pregnancy months or years before also seems possible [3,22].…”
Section: Discussionmentioning
confidence: 99%
“…The tumors could also represent metastatic lesions from an occult primary gonadal neoplasm undergoing spontaneous regression [11,22]. A neoplastic transformation of pulmonary placental emboli from a previous vesicular mole, term pregnancy, abortion or ectopic pregnancy months or years before also seems possible [3,22]. Finally, the tumor could have been generated from a metaplasia or differentiation of somatic neoplastic cells like primary lung cancer [13].…”
Section: Discussionmentioning
confidence: 99%
“…Because of the rarity and the clinicopathological similarity of PCC and hCG-producing GCC, [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][25][26][27][28][29][30][31][32] the criteria for distinguishing them are unclear. Thus, differential diagnosis has been very difficult.…”
Section: Discussionmentioning
confidence: 99%
“…The disease progression was rapid, and no therapy achieved the predicted efficacy. [4][5][6][7][8][9]25 Although there is no statistically significant difference in survival duration, these patients had relatively good responses to chemotherapy or operation. 1,23 The clinical courses of our patients were consistent with this.…”
Section: Discussionmentioning
confidence: 99%
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