Evidence map›Paper›PMID 40129801›Full record

ArticleRadiology case reports2025

Two case reports of ovarian clear cell carcinoma: Atypical MRI findings with a renal corticomedullary contrast-like appearance.

Nobuyuki Takeyama, Yasuo Ueda, Mutsuko Omatsu, Tetsuo Nemoto, Takashi Ogawa, Shingo Miyamoto, Kiyotake Ichizuka, Ken Nakayama, Miki Morioka, Hidefumi Fujisawa

Abstract readCase Reports
In one paragraph

Article in Radiology case reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Article
  2. MRI-based morphology of ovarian clear cell carcinomas.Abdominal radiology (New York) · 2026
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Nobuyuki TakeyamaDepartment of Radiology, Showa University Northern Yokohama Hospital, Yokohama-City, Tsuzuki-ku, Japan.
Yasuo UedaDepartment of Pathology and Laboratory Medicine, Showa University Fujigaoka Hospital, Yokohama-City, Kanagawa, Japan.
Mutsuko OmatsuDepartment of Pathology and Laboratory Medicine, Showa University Northern Yokohama Hospital, Yokohama-City, Tsuzuki-ku, Japan.
Tetsuo NemotoDepartment of Pathology and Laboratory Medicine, Showa University Northern Yokohama Hospital, Yokohama-City, Tsuzuki-ku, Japan.
Takashi OgawaDepartment of Pathology and Laboratory Medicine, Showa University Fujigaoka Hospital, Yokohama-City, Kanagawa, Japan.
Shingo MiyamotoDepartment of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital. 35-1 Chigasakichuo, Tsuzuki-ku, Yokohama-City, 224-8503, Japan.
Kiyotake IchizukaDepartment of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital. 35-1 Chigasakichuo, Tsuzuki-ku, Yokohama-City, 224-8503, Japan.
Ken NakayamaDepartment of Radiology, Showa University Fujigaoka Hospital, Yokohama-City, Kanagawa, Japan.
Miki MoriokaDepartment of Radiology, Showa University Fujigaoka Hospital, Yokohama-City, Kanagawa, Japan.
Hidefumi FujisawaDepartment of Radiology, Showa University Northern Yokohama Hospital, Yokohama-City, Tsuzuki-ku, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The MR images of the two cases of ovarian clear cell carcinomas (CCCs), presenting as entirely solid-masses, revealed a band-like peripheral area and a geographic central area: The peripheral area images resembled those of the renal cortex, while the central area images resembled those of the renal medulla. Compared to the iliac muscle, the band-like peripheral area appeared iso-hyperintense on T2-weighted imaging (T2WI), isointense on unenhanced T1-weighted imaging (T1WI), hyperintense on diffusion-weighted imaging (DWI), and hypo-isointense on an apparent diffusion coefficient (ADC) map, with gradual enhancement on dynamic contrast-enhanced T1WI. The geographic central area of the tumor appeared hyperintense on T2WI, hypointense on T1WI, hypointense on DWI, and hyperintense on an ADC map, with less enhancement on dynamic contrast-enhanced T1WI. Simple total hysterectomy, salpingo-oophorectomy, and partial omentectomy were performed in both cases. Both tumors were entirely solid, and histopathological analysis revealed cancer cell proliferation accompanied by an increase in stromal fibrous tissue in the peripheral area. Edematous stroma and fibrosis were predominantly observed with minimal cancer cells in the central area. The patients were diagnosed with ovarian CCC (pT1a). The mechanism behind the appearance of peripheral and central areas with renal corticomedullary contrast in such cases remains unknown, and MRI can provide valuable insights for the differential diagnosis of epithelial ovarian cancer.

Indexed as

Clear cell carcinomaMagnetic resonance imagingSolid-type

Identifiers

PMID40129801
PMCPMC11930399

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.