Intrapulmonary mature teratoma: an unusual finding

A new species of Pogonophora obtained from one station at a depth of 25 m from near the Dikson Island in the Kara Sea is described. Galathealinum karaense sp. nov. is one of the largest pogonophorans, the first known representative of the rare genus Galathealinum Kirkegaard, 1956 in the Eurasian part of the Arctic Ocean and a highly unusual finding for the desalted shallow of the Yenisey Gulf. Several characters occurring in the new species are rare or unique among the congeners: under-developed, hardly discernible frills on the tube segments, extremely thin felted fibres in the external layer of the tube, and very faintly separated papillae in the anterior part of the trunk. Morphological characters useful in distinguishing species within the genus Galathealinum are defined and summarised in a table. Diagnosis of the genus Galathealinum is emended and supplemented by new characters. Additionally, three taxonomic keys are provided to the species of Galathealinum and to the known species of the Arctic pogonophorans using either animals or their empty tubes only, with the brief zoogeographical information on each Arctic species.

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Mature teratoma splitting the brainstem in a newborn: case report

Journal of Neurosurgery Pediatrics ◽

10.3171/2019.5.peds19142 ◽

2019 ◽

Vol 24 (4) ◽

pp. 371-375

Author(s):

Li-tal Pratt ◽

Shelly I. Shiran ◽

Ronit Precel ◽

Liat Ben-Sira ◽

Gustavo Malinger ◽

...

Keyword(s):

Case Report ◽

Prenatal Diagnosis ◽

Posterior Fossa ◽

Mature Teratoma

Mature teratomas (MTs) of the posterior fossa are extremely rare. The authors present a case of a prenatal diagnosis of an MT splitting the brainstem. Representative images as well as the clinical and surgical course are presented. Literature regarding “split brainstem” and MT of the posterior fossa is discussed.

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A case of diagnosis of a giant fetal cervical teratoma

10.21516/2413-1458-2018-17-1-68-71 ◽

2018 ◽

Author(s):

S.V. Idimesheva, E.G. Bazhenova, V.A. Vedernikov

Keyword(s):

Magnetic Resonance Imaging ◽

Ultrasound Examination ◽

Mature Teratoma ◽

Tumor Resection ◽

Histopathological Diagnosis ◽

Resonance Imaging ◽

Cervical Tumor ◽

Third Trimester ◽

The Third ◽

Cervical Teratoma

А case of ultrasound diagnosis of the giant fetal cervical tumor in the third trimester of gestation is presented. The diagnosis of a cervical teratoma was supposed by ultrasound examination and magnetic resonance imaging. The tumor resection was successfully performed at 6 days of life. Histopathological diagnosis was mature teratoma.

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Rectal bone bezoar: an unusual finding

BMJ Case Reports ◽

10.1136/bcr-2016-215232 ◽

2016 ◽

pp. bcr2016215232

Author(s):

Maria Kopke Túlio ◽

Pedro Barreiro ◽

Tiago Bana e Costa ◽

Cristina Chagas

Keyword(s):

Unusual Finding

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Laparoscopic surgical management of a mature presacral teratoma: a case report

Surgical Case Reports ◽

10.1186/s40792-019-0702-x ◽

2019 ◽

Vol 5 (1) ◽

Cited By ~ 1

Author(s):

Liming Wang ◽

Yasumitsu Hirano ◽

Toshimasa Ishii ◽

Hiroka Kondo ◽

Kiyoka Hara ◽

...

Keyword(s):

Laparoscopic Resection ◽

Mature Teratoma ◽

Skin Incision ◽

Histopathological Diagnosis ◽

Tailgut Cyst ◽

Resonance Imaging ◽

Presumptive Diagnosis ◽

Case Presentation ◽

Contrast Enhanced ◽

Magnetic Resonance Imaging Mri

Abstract Background Mature presacral (retrorectal) teratoma is very rare. We report a case in which a mature retrorectal teratoma in an adult was successfully treated with laparoscopic surgery. Case presentation A 44-year-old woman was diagnosed with a presacral tumor during a physical examination. Endoscopic ultrasonography (EUS) revealed a multilocular cystic lesion; the lesion was on the left side of the posterior rectum and measured approximately 30 mm in diameter on both contrast-enhanced pelvic computed tomography (CT) and magnetic resonance imaging (MRI). The presumptive diagnosis was tailgut cyst. However, the histopathological diagnosis after laparoscopic resection was mature teratoma. It is still difficult to preoperatively diagnose mature retrorectal teratomas. Conclusions Laparoscopic resection of mature retrorectal teratomas is a feasible and promising method that is less invasive and can be adapted without extending the skin incision.

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GCT-53. CASE OF INTRACRANIAL GROWING TERATOMA SYNDROME WITH DIFFICULTY IN TIMING OF RESECTION

Neuro-Oncology ◽

10.1093/neuonc/noaa222.271 ◽

2020 ◽

Vol 22 (Supplement_3) ◽

pp. iii339-iii339

Author(s):

Hidenobu Yoshitake ◽

Hideo Nakamura ◽

Yuta Hamamoto ◽

Yusuke Otsu ◽

Jin Kikuchi ◽

...

Keyword(s):

Radiation Therapy ◽

Endoscopic Third Ventriculostomy ◽

Obstructive Hydrocephalus ◽

Mature Teratoma ◽

Timing Of Surgery ◽

Optimal Timing ◽

Third Ventriculostomy ◽

Mixed Tumor ◽

Gland Tumor ◽

Growing Teratoma Syndrome

Abstract BACKGROUND Intracranial Growing teratoma syndrome(iGTS) is a phenomenon in which a tumor with a teratoma component grows during treatment, and its pathological tissue is often a mature teratoma. Here we report a case of iGTS in which the timing of surgery was determined by tumor markers and changes in tumor size on MRI images. CASE-REPORT: 11-year-old boy with a short stature. He developed a headache and we found a pineal gland tumor on MRI. Due to obstructive hydrocephalus, an endoscopic third ventriculostomy and biopsy were performed. The pathological diagnosis was mature teratoma, but AFP was elevated at 104.2 ng/mL. Considering NGGCT, we started chemoradiation immediately. Despite the declining AFP, it gradually increased, at which point we suspected iGTS. Resection was considered, but at some point tumor growth had stopped, so radiation therapy and a second course of ICE therapy preceded the resection. Thereafter, the tumor was completely removed, and a third course of ICE therapy was performed. DISCUSSION The onset mechanism of iGTS has not been elucidated, and its prediction is difficult. Early resection of the tumor is required, but discontinuation of radiation therapy and side effects of chemotherapy also need to be considered. In our case, resection was performed after normalization of AFP and recovery of myelosuppression. The patient followed an uneventful course, but the timing of resection was controversial. CONCLUSION We experienced a case of iGTS in NGGCT, a mixed tumor with mature teratoma. The optimal timing of the resection was discussed and literature was reviewed.

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Fetus in fetu: two case reports from North African country

Egyptian Pediatric Association Gazette ◽

10.1186/s43054-020-00049-5 ◽

2021 ◽

Vol 69 (1) ◽

Author(s):

Moutaz Ragab ◽

Omar Nagy Abdelhakeem ◽

Omar Mansour ◽

Mai Gad ◽

Hesham Anwar Hussein

Keyword(s):

Histopathological Examination ◽

Case Reports ◽

Abdominal Mass ◽

Mature Teratoma ◽

Surgical Techniques ◽

Rare Condition ◽

Mass Effect ◽

Fetus In Fetu ◽

Vascular Connection ◽

First Case

Abstract Background Fetus in fetu is a rare congenital anomaly. The exact etiology is unclear; one of the mostly accepted theories is the occurrence of an embryological insult occurring in a diamniotic monochorionic twin leading to asymmetrical division of the blastocyst mass. Commonly, they present in the infancy with clinical picture related to their mass effect. About 80% of cases are in the abdomen retroperitoneally. Case presentation We present two cases of this rare condition. The first case was for a 10-year-old girl that presented with anemia and abdominal mass, while the second case was for a 4-month-old boy that was diagnosed antenatally by ultrasound. Both cases had vertebrae, recognizable fetal organs, and skin coverage. Both had a distinct sac. The second case had a vascular connection with the host arising from the superior mesenteric artery. Both cases were intra-abdominal and showed normal levels of alpha-fetoprotein. Histopathological examination revealed elements from the three germ layers without any evidence of immature cells ruling out teratoma as a differential diagnosis. Conclusions Owing to its rarity, fetus in fetu requires a high degree of suspicion and meticulous surgical techniques to avoid either injury of the adjacent vital structures or bleeding from the main blood supply connection to the host. It should be differentiated from mature teratoma.

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Clinical analysis of 12 cases of ovarian cystic mature teratoma with malignant transformation into squamous cell carcinoma

Journal of International Medical Research ◽

10.1177/0300060520981549 ◽

2021 ◽

Vol 49 (2) ◽

pp. 030006052098154

Author(s):

Xiangyu Wang ◽

Wenjing Li ◽

Yan Kong ◽

Xiangyu Liu ◽

Zhumei Cui

Keyword(s):

Squamous Cell Carcinoma ◽

Cell Carcinoma ◽

Malignant Transformation ◽

Squamous Cell ◽

Tumor Size ◽

Treatment Guidelines ◽

Mature Teratoma ◽

Cystic Teratoma ◽

Clinical Analysis ◽

Palpable Mass

Objective This study aimed to examine the clinicopathological characteristics, treatment, and prognostic factors in 12 cases of malignant transformation of mature cystic teratoma of the ovary (MCTO). Methods We performed a retrospective study of 12 patients with malignant transformation of MCTO who were admitted to the Affiliated Hospital of Qingdao University from 2003 to 2019. We examined case records, clinical parameters, and biological assessments. Results The median age of the patients was 56.5 years and seven of them were postmenopausal. The average tumor size was 18.5 cm. All patients had pelvic masses at their first hospital visit. Nine of the patients had discomfort in the lower abdomen, two presented with a lower abdominal palpable mass, and three were complicated by fever. The median follow-up time was 73 months (12‒193 months). Ten patients survived with a disease-free status and two died. Conclusions There is a low incidence of malignant transformation of MCTO, and its most common histological type is squamous cell carcinoma. Age and tumor size are important factors in malignant transformation of teratomas. While there is a lack of treatment guidelines for malignant transformation of MCTO, early diagnosis and treatment may be beneficial for these patients.

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