JCEM case reportsPub Date : 2024-08-05eCollection Date: 2024-08-01DOI: 10.1210/jcemcr/luae144
Ayse Nurcan Cebeci, Steven Hebert, Heiko Reutter, Oliver Rompel, Joachim Woelfle
{"title":"SIADH as a Rare Complication of Foramen Magnum Stenosis in an Infant With Achondroplasia.","authors":"Ayse Nurcan Cebeci, Steven Hebert, Heiko Reutter, Oliver Rompel, Joachim Woelfle","doi":"10.1210/jcemcr/luae144","DOIUrl":"10.1210/jcemcr/luae144","url":null,"abstract":"<p><p>Achondroplasia is the most common skeletal dysplasia and is associated with serious complications such as foramen magnum stenosis (FMS). This case report describes an infant with achondroplasia who presented with a syndrome of inappropriate antidiuretic hormone secretion (SIADH), secondary to significant FMS and myelocompression. A 2-month-old boy with prenatally diagnosed achondroplasia was referred due to disordered breathing and altered consciousness. On admission, apathy, hypotonus, and hypothermia with typical features of achondroplasia were noticed. Laboratory investigations revealed severe hyponatremia and hypochloridaemia with normal glucose and urea levels. The diagnosis of SIADH was made based on low serum osmolality in the presence of high urine osmolality, along with an elevated copeptin level. An emergency computerized tomography showed a high-grade stenosis at the cranio-cervical junction; subsequent magnetic resonance imaging demonstrated myelocompression. The patient underwent decompression surgery the next day; serum osmolality increased after the operation. Spontaneous breathing after extubation was sufficient whereas tetraplegia persisted despite intensive physiotherapy. Clinicians should be aware of SIADH as a presenting sign of FMS in children with achondroplasia. Further discussion is warranted regarding improving parental education and timing of screening recommendations.</p>","PeriodicalId":73540,"journal":{"name":"JCEM case reports","volume":"2 8","pages":"luae144"},"PeriodicalIF":0.0,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11298690/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141894949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Non Typical Type 1 Diabetes Mellitus Onset in a Child With Salt-Wasting Congenital Adrenal Hyperplasia.","authors":"Federica Rodofile, Francesca Franco, Nicoletta Buccino, Paola Cogo","doi":"10.1210/jcemcr/luae106","DOIUrl":"10.1210/jcemcr/luae106","url":null,"abstract":"<p><p>Type 1 diabetes mellitus (T1DM) and congenital adrenal hyperplasia (CAH) are 2 complex endocrine disorders with neighboring genetic loci. We present a case of T1DM onset in a 6-year-old child, already affected by 21-hydroxylase deficiency (salt-wasting CAH) diagnosed at 18 days of age, who was referred to our clinic because of typical symptoms of diabetes despite nondiagnostic fasting blood glucose values. Further analysis revealed elevated glycated hemoglobin (HbA1c), low C-peptide, and specific autoantibodies suggesting the diagnosis of T1DM. Although he only started with rapid-acting insulin analogue before meals, he presented spontaneous episodes of hypoglycemia just before the morning hydrocortisone dose, due to an underdosed glucocorticoid intake. Based on continuous glycemic monitoring (CGM), his morning dose was increased and given earlier; then we decided to apply an advanced hybrid closed-loop insulin pump to maintain glycemic time in range above 70%. Fasting glucose in CAH patients can be lower due to underdosed glucocorticoid replacement therapy. HbA1c and CGM can help recognize T1DM onset and evaluate the correct dosage of corticosteroid therapy in CAH patients. New studies are needed to understand the therapeutic approach for a more specific treatment in case of coexistence of these diseases.</p>","PeriodicalId":73540,"journal":{"name":"JCEM case reports","volume":"2 8","pages":"luae106"},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11293428/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141876893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wenjun Liao, Nipawan Waisayanand, Kanda Fanhchaksai, W Edward Visser, Marcel E Meima, Karn Wejaphikul
{"title":"Resistance to Thyroid Hormone Beta Due to <i>THRB</i> Mutation in a Patient Misdiagnosed With TSH-Secreting Pituitary Adenoma.","authors":"Wenjun Liao, Nipawan Waisayanand, Kanda Fanhchaksai, W Edward Visser, Marcel E Meima, Karn Wejaphikul","doi":"10.1210/jcemcr/luae140","DOIUrl":"10.1210/jcemcr/luae140","url":null,"abstract":"<p><p>Elevated concentrations of T3 and T4 concomitant with nonsuppressed TSH are found in both TSH-producing tumors and resistance to thyroid hormone beta (RTHβ), posing a diagnostic challenge. We demonstrate here a 54-year-old female who presented with palpitations, goiter, and elevated free T4 with nonsuppressed TSH concentrations (TSH 2.2 mIU/L [normal range, NR 0.27-4.2 mIU/L] and FT4 59.08 pmol/L [NR 12.0-22.0 pmol/L]). Because magnetic resonance imaging revealed a pituitary microadenoma (4 mm), she was diagnosed with TSH-secreting pituitary adenoma and underwent transsphenoidal surgery. Pathological reports showed no tumor cells. Subsequent genetic testing revealed a pathogenic variant in the <i>THRB</i> gene resulting in a His435Arg amino acid substitution in the T3 receptor isoform beta 1 (TRβ1), suggestive of RTHβ. In vitro and ex vivo studies revealed that the His435Arg mutated TRβ1 (TRβ1-H435R) completely abolishes the T3-induced transcriptional activation, nuclear receptor corepressor 1 release, steroid receptor coactivator 1 recruitment, and T3-induced thyroid hormone target gene expression, confirming the pathogenicity of this variant. The identification of a pituitary microadenoma in a patient with RTHβ led to a misdiagnosis of a TSH-producing tumor and unnecessary surgery. Genetic testing proved pivotal for an accurate diagnosis, suggesting earlier consideration in similar clinical scenarios.</p>","PeriodicalId":73540,"journal":{"name":"JCEM case reports","volume":"2 8","pages":"luae140"},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11291949/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141876894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
JCEM case reportsPub Date : 2024-07-30eCollection Date: 2024-08-01DOI: 10.1210/jcemcr/luae112
Neha Bapat, Tatiana Ferraro, Layal Esper, Arjun S Joshi, Faysal Haroun, Chelsey K Baldwin
{"title":"Treatment of Unresectable <i>BRAF V600E</i>, <i>TERT</i>-Mutated Differentiated Papillary Thyroid Cancer With Dabrafenib and Trametinib.","authors":"Neha Bapat, Tatiana Ferraro, Layal Esper, Arjun S Joshi, Faysal Haroun, Chelsey K Baldwin","doi":"10.1210/jcemcr/luae112","DOIUrl":"10.1210/jcemcr/luae112","url":null,"abstract":"<p><p>Complete surgical resection of differentiated papillary thyroid cancer (PTC) is associated with an excellent prognosis. However, for locally invasive PTC, disease-specific morbidity and mortality increases when microscopic margin negative resection (R0) or complete macroscopic resection (R1) is not feasible. Neoadjuvant dabrafenib and trametinib (DT) used in <i>BRAF V600E</i>-positive, unresectable anaplastic thyroid cancer has allowed for R0 or R1 resection and improved survival rates. We demonstrate feasibility of using neoadjuvant DT in a patient with <i>BRAF V600E</i> and <i>TERT</i>-mutated PTC for whom R0/R1 resection was initially aborted due to predicted unacceptable morbidity. The patient was treated with neoadjuvant DT for 5 months, at which time disease was undetectable on imaging with near resolution on final pathology; however, subsequent rapid recurrence after discontinuation of neoadjuvant DT occurred. Neoadjuvant DT offers promise in future cohorts of patients with locally invasive <i>BRAF V600E</i> and <i>TERT</i>-mutated PTC for whom neoadjuvant therapy can reduce surgical morbidity while still allowing for R0/R1 resection.</p>","PeriodicalId":73540,"journal":{"name":"JCEM case reports","volume":"2 8","pages":"luae112"},"PeriodicalIF":0.0,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11288368/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141857309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
JCEM case reportsPub Date : 2024-07-30eCollection Date: 2024-08-01DOI: 10.1210/jcemcr/luae118
Hend Abd El Baky, Danika Cziranka-Crooks, Brinda Prasanna Kumar, Meghan Jacobs, Jeremy Killion, Lucy D Mastrandrea
{"title":"Hypothyroidism-induced Rhabdomyolysis in a Pediatric Patient.","authors":"Hend Abd El Baky, Danika Cziranka-Crooks, Brinda Prasanna Kumar, Meghan Jacobs, Jeremy Killion, Lucy D Mastrandrea","doi":"10.1210/jcemcr/luae118","DOIUrl":"10.1210/jcemcr/luae118","url":null,"abstract":"<p><p>Hypothyroidism is a common clinical condition with nonspecific symptoms such as fatigue, cold intolerance, and constipation. Rarely, severe primary hypothyroidism presents with rhabdomyolysis. We present a 12-year-old boy with several months of fatigue, muscle cramping, and elevated creatine kinase (CK) who was found to have severe primary hypothyroidism. Initial laboratory evaluation was significant for CK 2056 U/L (reference, 0-300 U/L; 34.34 µkat/L) and creatinine 1.39 mg/dL (reference, 0.4-1 mg/dL; 122.88 µmol/L). He was admitted for management of rhabdomyolysis with acute kidney injury. Further biochemical testing revealed profound hypothyroidism-thyrotropin 494 mIU/mL (reference, 0.40-6.00 mIU/mL) and free thyroxine (T4) less than 0.4 ng/dL (reference, 0.80-1.80 ng/dL; <5.15 pmol/L). Thyroglobulin and thyroid peroxidase autoantibodies were positive, confirming autoimmune hypothyroidism. Low-dose levothyroxine was initiated. With aggressive rehydration, creatinine and CK levels improved. The patient was discharged home with instructions to escalate thyroid hormone replacement over 8 weeks. While the etiology of CK elevation in severe hypothyroidism is poorly understood, it is hypothesized that T4 deficiency alters mitochondrial oxidative capacity and glycogenolysis precipitating muscle atrophy and breakdown with CK release. This case highlights that clinicians should consider thyroid function testing in patients with symptoms of muscle pain and unexplained elevations in CK.</p>","PeriodicalId":73540,"journal":{"name":"JCEM case reports","volume":"2 8","pages":"luae118"},"PeriodicalIF":0.0,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11288370/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141857256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
JCEM case reportsPub Date : 2024-07-30eCollection Date: 2024-08-01DOI: 10.1210/jcemcr/luae131
Anna Angelousi, Anne Jouinot, Charis Bourgioti, Panagiotis Tokmakidis, Jérôme Bertherat, Gregory Kaltsas
{"title":"Transformation of a Benign Adrenocortical Adenoma to a Metastatic Adrenocortical Carcinoma Is Rare But It Happens.","authors":"Anna Angelousi, Anne Jouinot, Charis Bourgioti, Panagiotis Tokmakidis, Jérôme Bertherat, Gregory Kaltsas","doi":"10.1210/jcemcr/luae131","DOIUrl":"10.1210/jcemcr/luae131","url":null,"abstract":"<p><p>The transformation of an adrenocortical adenoma (ACA) to an adrenocortical carcinoma (ACC) is extremely rare. Current guidelines suggest against further imaging studies and follow-up in patients with nonfunctional adrenal incidentalomas (NFAIs) with benign imaging characteristics. Herein, we present a 64-year-old male patient diagnosed initially with a NFAI of 3 cm in size with imaging characteristics consistent with an ACA. However, 13 years after initial diagnosis, this apparent ACA developed into a high-grade cortisol and androgen-secreting ACC with synchronous metastases. The literature review revealed a further 9 case reports of adrenal incidentalomas initially characterized as ACA that subsequently developed into ACC within a period ranging from 1 to 10 years. The pathogenesis of transformation of an initially denoted ACA to ACC is not fully delineated, although the existing literature focuses on the preexisting or changing genetic background of these lesions, highlighting the need to develop robust prognostic markers to identify patients at risk and individualize the follow-up of these unique cases.</p>","PeriodicalId":73540,"journal":{"name":"JCEM case reports","volume":"2 8","pages":"luae131"},"PeriodicalIF":0.0,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11288369/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141857308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
JCEM case reportsPub Date : 2024-07-29eCollection Date: 2024-08-01DOI: 10.1210/jcemcr/luae103
Sarah Hamidi, Armeen Mahvash, Mimi I Hu
{"title":"Paraneoplastic Diarrhea From Medullary Thyroid Carcinoma Resolved With Yttrium-90 Radioembolization of Liver Metastases.","authors":"Sarah Hamidi, Armeen Mahvash, Mimi I Hu","doi":"10.1210/jcemcr/luae103","DOIUrl":"10.1210/jcemcr/luae103","url":null,"abstract":"<p><p>Medullary thyroid carcinoma (MTC) can often have an indolent course despite distant metastatic disease. Additionally, given that metastatic MTC is incurable and systemic therapies have non-negligeable toxicities, localized treatments are often favored in presence of oligo-progressive disease. Transarterial radioembolization (TARE) with yttrium-90 (Y90) has emerged as a safe and efficacious treatment for nonresectable primary and metastatic liver tumors, yet data supporting its use in metastatic MTC are limited. We present the case of a patient with hereditary MTC and large bilobar liver metastases who demonstrated tumor response and resolution of their paraneoplastic diarrhea following TARE with Y90 microspheres.</p>","PeriodicalId":73540,"journal":{"name":"JCEM case reports","volume":"2 8","pages":"luae103"},"PeriodicalIF":0.0,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11285419/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141794191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
JCEM case reportsPub Date : 2024-07-24eCollection Date: 2024-07-01DOI: 10.1210/jcemcr/luae132
Liesbeth Maggiotto, Steven D Mittelman, Roja Fallah
{"title":"Neonatal Graves Disease Masquerading as Hemochromatosis.","authors":"Liesbeth Maggiotto, Steven D Mittelman, Roja Fallah","doi":"10.1210/jcemcr/luae132","DOIUrl":"https://doi.org/10.1210/jcemcr/luae132","url":null,"abstract":"<p><p>Thyroid autoimmunity is extremely common in the adult population and can affect pregnancy outcomes. Signs in the newborn can range from absent to severe, making the diagnosis easy to miss. We present an interesting case of neonatal Graves disease associated with intrauterine growth restriction, premature delivery, and liver failure with severely high ferritin, thought to be secondary to hemochromatosis. Treatment of the underlying hyperthyroidism caused a rapid resolution of the elevated ferritin and liver failure. This report highlights the importance of considering Graves disease in newborns with liver failure of unknown etiology.</p>","PeriodicalId":73540,"journal":{"name":"JCEM case reports","volume":"2 7","pages":"luae132"},"PeriodicalIF":0.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11267223/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141763043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
JCEM case reportsPub Date : 2024-07-24eCollection Date: 2024-07-01DOI: 10.1210/jcemcr/luae139
Tomoko Kobayashi, Shintaro Iwama, Koji Suzuki, Hiroshi Arima
{"title":"Hyperthyroidism Due to Functioning Metastatic Bone Lesions of Follicular Thyroid Carcinoma Treated With Lenvatinib.","authors":"Tomoko Kobayashi, Shintaro Iwama, Koji Suzuki, Hiroshi Arima","doi":"10.1210/jcemcr/luae139","DOIUrl":"10.1210/jcemcr/luae139","url":null,"abstract":"<p><p>A 71-year-old woman was diagnosed with unresectable metastatic follicular thyroid carcinoma (FTC) and thyrotoxicosis. She was negative for the presence of thyroxine receptor antibody and thyroid-stimulating antibody. Whole-body scintigraphy revealed increased <sup>99m</sup>Tc-pertechnetate uptake in metastatic bone lesions but not in the thyroid nodule. Since radioactive iodine therapy was not applicable because the canalis vertebralis had been invaded, treatment with lenvatinib was initiated, along with methimazole and potassium iodide. The serum level of thyroid hormone decreased. The patient developed hypothyroidism, which continued after the methimazole was stopped, suggesting that lenvatinib suppressed the hyperthyroidism. To our best knowledge, this is the first report of a patient with functioning bone lesions of metastatic FTC in whom hyperthyroidism was controlled by lenvatinib without radioactive iodine therapy.</p>","PeriodicalId":73540,"journal":{"name":"JCEM case reports","volume":"2 7","pages":"luae139"},"PeriodicalIF":0.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11267225/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141763041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
JCEM case reportsPub Date : 2024-07-24eCollection Date: 2024-08-01DOI: 10.1210/jcemcr/luae115
Bin Guan, Sunita K Agarwal, James M Welch, Smita Jha, Lee S Weinstein, William F Simonds
{"title":"A Germline <i>ZFX</i> Missense Variant in a Patient With Primary Hyperparathyroidism.","authors":"Bin Guan, Sunita K Agarwal, James M Welch, Smita Jha, Lee S Weinstein, William F Simonds","doi":"10.1210/jcemcr/luae115","DOIUrl":"10.1210/jcemcr/luae115","url":null,"abstract":"<p><p>A 51-year-old woman with a history of primary hyperparathyroidism (PHPT) with prior parathyroidectomy, osteoporosis, and learning disability was referred for hypercalcemia discovered after a fall. Family history was negative for PHPT, pituitary, enteropancreatic neuroendocrine, or jaw tumors. Dysmorphic facies, multiple cutaneous melanocytic nevi, café au lait macules, long fingers, and scoliosis were observed. Laboratory evaluation showed an elevated parathyroid hormone (PTH) level, hypercalcemia, and hypophosphatemia, all consistent with PHPT. Preoperative imaging revealed a right inferior candidate parathyroid lesion. The patient underwent right inferior parathyroidectomy with normalization of PTH, calcium, and phosphorus. Genetic testing showed a likely pathogenic de novo heterozygous germline missense variant p.R764W in the <i>ZFX</i> gene that encodes a zinc-finger transcription factor previously shown to harbor somatic missense variants in a subset of sporadic parathyroid tumors. Germline variants in <i>ZFX</i> have been reported in patients with an X-linked intellectual disability syndrome with an increased risk for congenital anomalies and PHPT. Further research may determine if genetic testing for <i>ZFX</i> could be of potential benefit for patients with PHPT and developmental anomalies, even in the absence of a family history of parathyroid disease.</p>","PeriodicalId":73540,"journal":{"name":"JCEM case reports","volume":"2 8","pages":"luae115"},"PeriodicalIF":0.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11267473/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141763044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}