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Gynecologic Oncology Reports Apr 2024Sertoli-Leydig cell tumors (SLCT) are a rare form of sex cord stromal tumors. germline mutations have been identified in a portion of these cases. We report a...
Sertoli-Leydig cell tumors (SLCT) are a rare form of sex cord stromal tumors. germline mutations have been identified in a portion of these cases. We report a 15-year-old individual who presented to a well-child visit with secondary amenorrhea and subjective observations of a deepening voice and broadening shoulders. Elevations were noted in serum testosterone, inhibin B, androstenedione, and DHEA. Pelvic ultrasound and magnetic resonance imaging (MRI) revealed a left ovarian complex lesion measuring 5.8 x 5.5 x 4.6 cm. A laparoscopic unilateral salpingo-oophorectomy was performed with negative pelvic washings and a diagnosis of stage 1A, poorly differentiated/grade 3 SLCT of the ovary. Somatic and germline testing both demonstrated pathologic variations. Adjuvant chemotherapy with cisplatin/etoposide/ifosfamide (PEI) was completed under the care of pediatric oncology, and this patient is now undergoing surveillance with no signs of recurrence. Syndrome is associated with multiple tumors, including SLCT, pleuropulmonary blastoma (PPB), cystic sarcomas, and Wilms tumor among others. Patients with SLCT found to have a mutation should undergo genetic testing and cancer screening, which may help to identify neoplasms associated with the mutation at an early stage. This case will serve as a useful addition to the literature and review suggested pre-operative, operative, and surveillance guidelines.
PubMed: 38571566
DOI: 10.1016/j.gore.2024.101353 -
Thorax Jun 2024
To progress or not to progress: new insights into the evolution of pleuropulmonary blastomas come from studying lung cysts in adolescents and adults with -related tumour predisposition.
Topics: Humans; Ribonuclease III; Pulmonary Blastoma; DEAD-box RNA Helicases; Adult; Adolescent; Genetic Predisposition to Disease; Lung Neoplasms; Cysts
PubMed: 38548329
DOI: 10.1136/thorax-2024-221459 -
The American Journal of Surgical... Jun 2024DICER1 tumor predisposition syndrome results from pathogenic variants in DICER1 and is associated with a variety of benign and malignant lesions, typically involving...
DICER1 tumor predisposition syndrome results from pathogenic variants in DICER1 and is associated with a variety of benign and malignant lesions, typically involving kidney, lung, and female reproductive system. Over 70% of sarcomas in DICER1 tumor predisposition syndrome occur in females. Notably, pediatric cystic nephroma (pCN), a classic DICER1 tumor predisposition syndrome lesion, shows estrogen receptor (ER) expression in stromal cells. There are also renal, hepatic, and pancreatic lesions unassociated with DICER1 tumor predisposition syndrome that have an adult female predominance and are characterized/defined by ER-positive stromal cells. Except for pCN, the expression of ER in DICER1-associated lesions remains uninvestigated. In the present study, ER expression was assessed by immunohistochemistry in 89 cases of DICER1-related lesions and 44 lesions lacking DICER1 pathogenic variants. Expression was seen in stromal cells in pCN and pleuropulmonary blastoma (PPB) types I and Ir, whereas anaplastic sarcoma of kidney and PPB types II and III were typically negative, as were other solid tumors of non-Müllerian origin. ER expression was unrelated to the sex or age of the patient. Expression of ER showed an inverse relationship to preferentially expressed antigen in melanoma (PRAME) expression; as lesions progressed from cystic to solid (pCN/anaplastic sarcoma of kidney, and PPB types I to III), ER expression was lost and (PRAME) expression increased. Thus, in DICER1 tumor predisposition syndrome, there is no evidence that non-Müllerian tumors are hormonally driven and antiestrogen therapy is not predicted to be beneficial. Lesions not associated with DICER1 pathogenic variants also showed ER-positive stromal cells, including cystic pulmonary airway malformations, cystic renal dysplasia, and simple renal cysts in adult kidneys. ER expression in stromal cells is not a feature of DICER1 perturbation but rather is related to the presence of cystic components.
Topics: Humans; Ribonuclease III; DEAD-box RNA Helicases; Female; Male; Receptors, Estrogen; Child; Adult; Biomarkers, Tumor; Immunohistochemistry; Adolescent; Middle Aged; Child, Preschool; Young Adult; Kidney Neoplasms; Pulmonary Blastoma; Genetic Predisposition to Disease; Infant; Aged
PubMed: 38539053
DOI: 10.1097/PAS.0000000000002209 -
Thorax Jun 2024Pleuropulmonary blastoma (PPB), the hallmark tumour associated with -related tumour predisposition, is characterised by an age-related progression from a cystic lesion...
Prevalence of lung cysts in adolescents and adults with a germline pathogenic/likely pathogenic variant: a report from the National Institutes of Health and International Pleuropulmonary Blastoma/ Registry.
BACKGROUND
Pleuropulmonary blastoma (PPB), the hallmark tumour associated with -related tumour predisposition, is characterised by an age-related progression from a cystic lesion (type I) to a high-grade sarcoma with mixed cystic and solid features (type II) or purely solid lesion (type III). Not all cystic PPBs progress; type Ir (regressed), hypothesised to represent regressed or non-progressed type I PPB, is an air-filled, cystic lesion lacking a primitive sarcomatous component. This study aims to evaluate the prevalence of non-progressed lung cysts detected by CT scan in adolescents and adults with germline pathogenic/likely pathogenic (P/LP) variants.
METHODS
Individuals were enrolled in the National Cancer Institute Natural History of Syndrome study, the International PPB/ Registry and/or the International Ovarian and Testicular Stromal Tumor Registry. Individuals with a germline P/LP variant with first chest CT at 12 years of age or older were selected for this analysis.
RESULTS
In the combined databases, 110 individuals with a germline P/LP variant who underwent first chest CT at or after the age of 12 were identified. Cystic lung lesions were identified in 38% (42/110) with a total of 72 cystic lesions detected. No demographic differences were noted between those with lung cysts and those without lung cysts. Five cysts were resected with four centrally reviewed as type Ir PPB.
CONCLUSION
Lung cysts are common in adolescents and adults with germline variation. Further study is needed to understand the mechanism of non-progression or regression of lung cysts in childhood to guide judicious intervention.
Topics: Adolescent; Adult; Child; Female; Humans; Male; Middle Aged; Young Adult; Cysts; DEAD-box RNA Helicases; Germ-Line Mutation; Lung Diseases; Lung Neoplasms; Prevalence; Pulmonary Blastoma; Registries; Ribonuclease III; Tomography, X-Ray Computed; United States; Aged
PubMed: 38508719
DOI: 10.1136/thorax-2023-221024 -
Andes Pediatrica : Revista Chilena de... Dec 2023Pleuropulmonary blastoma (PPB) is the most common pediatric malignant primary lung tumor. It's associated with the DICER1 gene pathogenic germline variants. Antenatal...
UNLABELLED
Pleuropulmonary blastoma (PPB) is the most common pediatric malignant primary lung tumor. It's associated with the DICER1 gene pathogenic germline variants. Antenatal presentation is infrequent and poses a challenge in the differential diagnosis of congenital pulmonary airway malformation (CPAM).
OBJECTIVE
to report a case of unusual presentation of PPB associated with DICER1 syndrome and to describe the difficulty in differentiating it from CPAM.
CLINICAL CASE
Male patient with prenatal diagnosis of hypervascular left lung lesion, with mediastinal shift and progressive growth, initially interpreted as CPAM. He was born at 38 weeks, requiring transitory treatment with positive pressure due to ventilatory impairment. A CT scan with contrast showed a large multilocular cystic mass containing air causing mass effect, requiring open left upper lobectomy. Histology results were compatible with type I PPB, with negative margins, and positive genetic study for DICER1 syndrome. Seven weeks post-resection, an aerial image was detected in the upper left side of the chest, with progressive growth, requiring a new tumor resection and upper segmentectomy, with biopsy corresponding to recurrence of type I PPB with negative margins. He received adjuvant treatment with chemotherapy, with follow-up for 2 years, remaining asymptomatic, without recurrence, and with negative screening for other neoplasms associated with DICER1 syndrome. Among the family history, the mother had papillary thyroid cancer and tested positive for the mutation.
CONCLUSION
PPB is a rare cancer, difficult to distinguish from CPAM, especially in its antenatal presentation. Nowing its association with DICER1 syndrome and performing a genetic study are key to the early detection of BPP and the search for other tumors associated with the syndrome.
Topics: Female; Humans; Male; Pregnancy; DEAD-box RNA Helicases; Diagnosis, Differential; Lung; Lung Neoplasms; Pulmonary Blastoma; Ribonuclease III; Infant, Newborn
PubMed: 38329309
DOI: 10.32641/andespediatr.v94i6.4663 -
Cancers Jan 2024Mutations in , a gene involved in RNA interference, have been associated with a wide range of multi-organ neoplastic and non-neoplastic conditions. Historically known... (Review)
Review
Mutations in , a gene involved in RNA interference, have been associated with a wide range of multi-organ neoplastic and non-neoplastic conditions. Historically known for its association with pleuropulmonary blastoma, DICER1 syndrome has received more attention due to the association with newly discovered diseases and tumors. Recent studies evaluating mutations and DICER1-driven thyroid disease in both pediatric and adult thyroid nodules revealed thyroid disease as the most common manifestation of mutations. This study undertakes a comprehensive investigation into mutations, focusing on their role in thyroid diseases. Specific attention was given to thyroid follicular nodular disease and differentiated thyroid carcinomas in infancy as highly indicative of germline mutation or DICER1 syndrome. Additionally, poorly differentiated thyroid carcinoma and thyroblastoma were identified as potential indicators of somatic mutations. Recognizing these manifestations should prompt clinicians to expedite genetic evaluation for this neoplastic syndrome and classify these patients as high risk for additional multi-organ malignancies. This study comprehensively synthesizes the current knowledge surrounding this genetically associated entity, providing intricate details on histologic findings to facilitate its diagnosis.
PubMed: 38254836
DOI: 10.3390/cancers16020347 -
A rare case of type III pleuropulmonary blastoma infiltrating the left heart in an 11-year-old girl.International Journal of Surgery Case... Feb 2024Pleuropulmonary blastoma (PPB) is a rare primary malignant tumor in the chest that mainly occurs in children <6 years of age. Vascular extensions are even rarer,...
INTRODUCTION AND IMPORTANCE
Pleuropulmonary blastoma (PPB) is a rare primary malignant tumor in the chest that mainly occurs in children <6 years of age. Vascular extensions are even rarer, approximately 3 % of types II and III PPB, and have fatal complications. The patients of reported cases who had tumor extension to the heart are younger than three years old, whereas in this case, we reported an 11-year-old girl who was of school age. This case report aims to describe a rare case of a type III Pleuropulmonary Blastoma infiltrating the left heart of a school-age girl.
CASE PRESENTATION
An 11-year-old girl presented at an emergency department with two months of progressive dyspnea with malnutrition. A fused mass was found in LA on an echocardiogram along with moderate MR, severe MS, and mild pericardial effusion. CT scan showed a massive pleural effusion with a solid mass in the left lung obstructing the left bronchial tree, accompanied by the expansion of the tumor mass into the left pulmonary vein and LA.
CLINICAL DISCUSSION
Total removal of the tumor was performed, aided by cardiopulmonary bypass. Type III PPB was confirmed histopathologically.
CONCLUSION
PPB is a rare, aggressive tumor that has three types. Various manifestations can occur in line with the presence of metastases. The treatment consists of aggressive surgery and chemotherapy. Because of its poor prognosis, prompt recognition of the involvement of the cardiac chamber and great vessels in type III PPB should be considered before surgery.
PubMed: 38232413
DOI: 10.1016/j.ijscr.2024.109237 -
Radiology Dec 2023A 7-year-old boy with a history of pleuropulmonary blastoma after resection 6 years prior and germline mutation was being monitored by physicians at a multidisciplinary...
A 7-year-old boy with a history of pleuropulmonary blastoma after resection 6 years prior and germline mutation was being monitored by physicians at a multidisciplinary genetic predisposition clinic. He demonstrated no evidence of recurrent pleuropulmonary blastoma, and his renal US, chest radiographic, and ocular screening examination results remained normal. Per age-directed screening guidelines, he underwent thyroid US. He had no signs or symptoms of hyper- or hypothyroidism. Physical examination was notable for the absence of thyromegaly or palpable nodule. US at 12-month follow-up showed no change in size or appearance of the left lobe (not shown). However, at this time, the Thyroid Imaging Reporting and Data System (TI-RADS) classification scheme was applied to the stable left lobe finding. The findings were discussed at a multidisciplinary thyroid nodule conference, and the decision was made to bring the patient back for a short-term follow-up for limited unenhanced MRI without sedation. A diagnosis was made based on the follow-up imaging findings.
Topics: Male; Humans; Child; Pulmonary Blastoma; Thyroid Nodule; Germ-Line Mutation; Thorax; Ribonuclease III; DEAD-box RNA Helicases
PubMed: 38112545
DOI: 10.1148/radiol.222365 -
JPMA. the Journal of the Pakistan... Dec 2023Intraocular medulloepithelioma is a rare, congenital tumour of the non-pigmented ciliary epithelium. It most frequently arises from the ciliary body but can also have...
Intraocular medulloepithelioma is a rare, congenital tumour of the non-pigmented ciliary epithelium. It most frequently arises from the ciliary body but can also have its origin from the retina, iris and optic nerve. The age when lesion first appears is typically around 2-10 years. Nearly 50-60% of patients having this lesion may also have secondary features such as cataract and neovascular glaucoma. Those with extrascleral medulloepithelioma are at risk for metastasis. Systemic correlation of the tumour with pleuropulmonary blastoma/DICER1 gene is reported in the literature. Here, we report a case of a 15 years old boy with one year history of right eye proptosis and painful red right eye along with decreased vision for one week. He was assessed and operated for cataract elsewhere three years back. The ophthalmology team managed him for endophthalmitis with intravenous antibiotics, followed by 2 sessions of cryotherapy and finally an enucleation of right eye was performed due to severe pain and no vision in the involved eye. His left eye, general physical examination and systemic evaluation were normal. Histopathology revealed the diagnosis of 'malignant teratoid medulloepithelioma'. Therefore, evaluation of systemic associations for DICER1 gene mutations was performed by the oncology team. For high risk feature of scleral invasion on histopathology, he was treated with chemotherapy. Since the tumour is of rare occurrence; an international expert team with vast research experience in PPB/DICER1 associated tumours was also contacted. He was registered in International PPB/DICER1 registry where a detailed central radiology and pathology review was performed. Genetic counseling and surveillance plan was also suggested by the international registry.
Topics: Humans; Male; Child; Child, Preschool; Adolescent; Ciliary Body; Neuroectodermal Tumors, Primitive; Pulmonary Blastoma; Neoplasms, Germ Cell and Embryonal; Cataract; Ribonuclease III; DEAD-box RNA Helicases
PubMed: 38083935
DOI: 10.47391/JPMA.8253 -
The American Journal of Surgical... Feb 2024Germline and somatic pathogenic variants (PVs) in DICER1 , encoding a miRNA biogenesis protein, are associated with a wide variety of highly specific pathologic...
Germline and somatic pathogenic variants (PVs) in DICER1 , encoding a miRNA biogenesis protein, are associated with a wide variety of highly specific pathologic entities. The lung tumors pleuropulmonary blastoma, pulmonary blastoma (PB), and well-differentiated fetal lung adenocarcinoma (WDFLAC) are all known to harbor DICER1 biallelic variants (loss of function and/or somatic hotspot missense mutations), and all share pathologic features reminiscent of the immature lung. However, the role of DICER1 PVs in non-small cell lung cancer (NSCLC) is relatively unknown. Here, we aimed to establish the spectrum of lung pathologies associated with DICER1 hotspot PVs and to compare the mutational landscape of DICER1 -mutated NSCLC with and without hotspots. We queried DNA sequencing data from 12,146 NSCLCs featuring somatic DICER1 variants. 235 (1.9%) cases harboring ≥ 1 DICER1 PV were found and 9/235 (3.8%) were DICER1 hotspot-positive cases. Histologic review of DICER1 hotspot-positive cases showed that all but one tumor were classified as within the histologic spectrum of PB/WDFLAC, whereas all the DICER1 non-hotspot double variants were classified as lung adenocarcinomas, not otherwise specified. Comparison between the mutational landscape of DICER1 hotspot-positive and hotspot-negative cases revealed a higher frequency of CTNNB1 mutations in the hotspot-positive cases (5/9 vs. 2/225; P <0.00001). We conclude that DICER1 somatic hotspots are not implicated in the most common forms of NSCLC but rather select for morphologic features of lung tumor types such as PB and WDFLAC. As a corollary, cases showing this tumor morphology should undergo testing for DICER1 variants, and if positive, genetic counseling should be considered.
Topics: Humans; Infant, Newborn; Carcinoma, Non-Small-Cell Lung; Lung Neoplasms; Mutation; MicroRNAs; Pulmonary Blastoma; Ribonuclease III; Germ-Line Mutation; DEAD-box RNA Helicases
PubMed: 38050371
DOI: 10.1097/PAS.0000000000002162