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Table 3 Previous studies evaluating the contralateral pelvic and paraaortic lymphatic metastasis presenting in unilateral clinical stage I or stage Ia epithelial ovarian carcinoma patients (stage Ia patients are bolded and ipsilateral pelvic metastasis are not included.).

From: Lymph node metastasis in grossly apparent clinical stage Ia epithelial ovarian cancer: Hacettepe experience and review of literature

Author Description of Study and Stages Tumor Laterality Reported Histology and Grade (Gr) CPLN or PA Met* n
Walter J. [5] Ia
(case report)
Left (Ia) Anaplastic, Gr3 Right paraaortic + right pelvic 1
Onda [10] 7 out of 33 Stage I patients have lymphatic metastasis. 6 have unilateral tumor. Left Not defined Bilateral pelvic+PA 1
   Right   Right PA 1
   Right   Right pelvic+Right PA 1
   Right   Left pelvic+Bilateral PA 1
Cass [10] 96 unilateral stage I patients with unilateral or bilateral pelvic paraortic lymphadenectomy are evaluated. 14 of these 96 had lymphatic metastasis. Right Gr3 Left PA 1
   Right Gr3 Left pelvic 1
   Left Gr3 Right PA +Right pelvic 1
   Left Gr3 Bilateral pelvic 1
   Right Gr3 Bilateral pelvic 1
   Right Gr3 Right PA 4
   Left Gr3 Left PA 2
Petru [2] 9 out of 40 Stage I patients had lymphatic metastasis. 6 out of 9 patients had unilateral tumors. Not defined Not defined Contralateral pelvic 1
     Pelvic+paraaortic 1
Negishi[9] 8 out of 123 stage I patients had lymphatic metastasis. One patient was stage Ia. Right (Ia) Clear cell (Both) Right paraaortic 2
   Left Clear cell (Both) Bilateral PA 2
   Left Mucinous (grade ?) Bilateral pelvic and PA 1
   Left Clear Left PA 1
   Left Mucinous Left PA 1
   Left Serous Left PA 1
Sakuragi [13] 4 out of 78 Stage I patients had lymphatic metastasis. One patient out of 31 Stage Ia had lymphatic metastasis. Right (Ia) Clear cell Gr1 Right PA 1
   Left Clear/Mucinous Gr2 Left PA 2
   Left Clear cell Gr1 Bilateral PA 1
Morrice [15] 8 out of 60 stage Ia patients had lymphatic metastasis. Not defined Gr2:4 Contralateral PA 1
   Not defined Gr3:3 Ipsilateral PA 5
     Ipsilateral PA+Pelvic 1
Baiocchi, [20] 32 out of 242 Stage I patients had lymphatic metastasis. 24 out of 32 was in Stage Ia. Total number of stage Ia was 215. Right Overall distribution Left pelvic 1
   Right of grades among Left PA 2
   Right patients with Bilateral pelvic+PA 3
   Right lymphatic metastasis Right PA 5
   Right was as follows: Right pelvic+PA 2
   Left Borderline: 7 Left PA 4
    Gr1: 3   
    Gr2: 6   
    Gr3: 15   
    Undefined: 1   
Suzuki [14] 5 out of 47 Stage I patients had lymphatic metastasis. 18 patients had Stage Ia disease. Not defined Ia Clear cell Gr2 Contralateral pelvic 1
   Not defined Serous Gr1 Contralateral pelvic 1
   Not defined Serous Gr2 Ipsilateral pelvic+PA 1
   Not defined Serous Gr2 PA 1
   Not defined Serous Gr1 Ipsilateral suprainguinal 1
This Study 2 out of 33 stage Ia patients had lymphatic metastasis Left Transitional Gr3 PA 1
  1. * Contalateral Pelvic or Paraaortic Lymph Node Metastasis in Stage I Epithelial Ovarian Carcinoma