Clinical Overview > Condition/ Syndrome

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Tejhmal Rehman Departments of Endocrinology Diabetes and Metabolism, St George’s University Hospitals NHS Trust, London, UK

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Ali Hameed Departments of Endocrinology Diabetes and Metabolism, St George’s University Hospitals NHS Trust, London, UK

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Nigel Beharry Departments of Radiology, St George’s University Hospitals NHS Trust, London, UK

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J Du Parcq Departments of Histopathology, St George’s University Hospitals NHS Trust, London, UK

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Gul Bano Departments of Endocrinology Diabetes and Metabolism, St George’s University Hospitals NHS Trust, London, UK

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Summary

Beta-human chorionic gonadotropin (βhCG) is normally produced by syncytiotrophoblasts of the placenta during pregnancy and aids embryo implantation. However, it is also secreted in varying amounts in non-pregnant conditions commonly heralding a neoplastic process. We present a case of 50-year-old man, who presented with bilateral gynaecomastia with elevated testosterone, oestradiol, suppressed gonadotropins with progressively increasing levels of human chorionic gonadotropin (hCG). Biochemical and radiological investigations including ultrasonography of testes, breast tissue, MRI pituitary and CT scan full body did not identify the source of hCG. FDG PET scan revealed a large mediastinal mass with lung metastasis. Immunostaining and histological analysis confirmed the diagnosis of primary choriocarcinoma of the mediastinum. It is highly aggressive and malignant tumor with poor prognosis. Early diagnosis and management are essential for the best outcome.

Learning points:

  • High βhCG in a male patient or a non-pregnant female suggests a paraneoplastic syndrome.

  • In the case of persistently positive serum hCG, exclude immunoassay interference by doing the urine hCG as heterophilic antibodies are not present in the urine.

  • Non-gestational choriocarcinoma is an extremely rare trophoblastic tumor and should be considered in young men presenting with gynaecomastia and high concentration of hCG with normal gonads.

  • A high index of suspicion and extensive investigations are required to establish an early diagnosis of extra-gonadal choriocarcinoma.

  • Early diagnosis is crucial to formulate optimal management strategy and to minimize widespread metastasis for best clinical outcome.

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Priya Vaidyanathan Division of Endocrinology, Children’s National Health System, Washington, District of Columbia, USA

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Paul Kaplowitz Division of Endocrinology, Children’s National Health System, Washington, District of Columbia, USA

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Summary

Pubertal gynecomastia is common, can be seen in 65% of the adolescent boys and is considered physiological. It is thought to be due to transient imbalance between the ratio of testosterone and estradiol in the early stages of puberty. It resolves in 1–2 years and requires no treatment. However, more persistent and severe pubertal gynecomastia is less common and can be associated with pathological disorders. These can be due to diminished androgen production, increased estrogen production or androgen resistance. We report a case of persistent pubertal gynecomastia due to partial androgen insensitivity syndrome (PAIS), classical hormone findings and a novel mutation in the androgen receptor (AR) gene.

Learning points:

  • Laboratory testing of follicle-stimulating hormone (FSH), leutinizing hormone (LH) and testosterone for pubertal gynecomastia is most helpful in the setting of undervirization.

  • The hormonal finding of very high testosterone, elevated LH and estradiol and relatively normal FSH are classical findings of PAIS.

  • Gynecomastia due to PAIS will not resolve and surgery for breast reduction should be recommended.

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M A Shehab Department of Endocrinology, BSMMU, Dhaka, Bangladesh

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Tahseen Mahmood Department of Endocrinology, BSMMU, Dhaka, Bangladesh

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M A Hasanat Department of Endocrinology, BSMMU, Dhaka, Bangladesh

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Md Fariduddin Department of Endocrinology, BSMMU, Dhaka, Bangladesh

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Nazmul Ahsan Department of Genetic Engineering & Biotechnology, University of Dhaka, Dhaka, Bangladesh

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Mohammad Shahnoor Hossain Department of Genetic Engineering & Biotechnology, University of Dhaka, Dhaka, Bangladesh

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Md Shahdat Hossain Department of Genetic Engineering & Biotechnology, University of Dhaka, Dhaka, Bangladesh

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Sharmin Jahan Department of Endocrinology, BSMMU, Dhaka, Bangladesh

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Summary

Congenital adrenal hyperplasia (CAH) due to the three-beta-hydroxysteroid-dehydrogenase (3β-HSD) enzyme deficiency is a rare autosomal recessive disorder presenting with sexual precocity in a phenotypic male. Klinefelter syndrome (KS) is the most common sex chromosome aneuploidy presenting with hypergonadotropic hypogonadism in a male. However, only a handful of cases of mosaic KS have been described in the literature. The co-existence of mosaic KS with CAH due to 3β-HSD enzyme deficiency portrays a unique diagnostic paradox where features of gonadal androgen deficiency are masked by simultaneous adrenal androgen excess. Here, we report a 7-year-old phenotypic male boy who, at birth presented with ambiguous genitalia, probably a microphallus with penoscrotal hypospadias. Later on, he developed accelerated growth with advanced bone age, premature pubarche, phallic enlargement and hyperpigmentation. Biochemically, the patient was proven to have CAH due to 3β-HSD deficiency. However, the co-existence of bilateral cryptorchidism made us to consider the possibility of hypogonadism as well, and it was further explained by concurrent existence of mosaic KS (47,XXY/46,XX). He was started on glucocorticoid and mineralocorticoid replacement and underwent right-sided orchidopexy on a later date. He showed significant clinical and biochemical improvement on subsequent follow-up. However, the declining value of serum testosterone was accompanied by rising level of FSH thereby unmasking hypergonadotropic hypogonadism due to mosaic KS. In future, we are planning to place him on androgen replacement as well.

Learning points:

  • Ambiguous genitalia with subsequent development of sexual precocity in a phenotypic male points towards some unusual varieties of CAH.

  • High level of serum testosterone, adrenal androgen, plasma ACTH and low basal cortisol are proof of CAH, whereas elevated level of 17-OH pregnenolone is biochemical marker of 3β-HSD enzyme deficiency.

  • Final diagnosis can be obtained with sequencing of HSD3B2 gene showing various mutations.

  • Presence of bilateral cryptorchidism in such a patient may be due to underlying hypogonadism.

  • Karyotyping in such patient may rarely show mosaic KS (47,XXY/46,XX) and there might be unmasking of hypergonadotropic hypogonadism resulting from adrenal androgen suppression from glucocorticoid treatment.

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Taieb Ach Departments of Internal Medicine and Endocrinology, University Hospital Fattouma Bourguiba Monastir, Monastir, Tunisia

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Hela Marmouch Departments of Internal Medicine and Endocrinology, University Hospital Fattouma Bourguiba Monastir, Monastir, Tunisia

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Dorra Elguiche Departments of Internal Medicine and Endocrinology, University Hospital Fattouma Bourguiba Monastir, Monastir, Tunisia

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Asma Achour Departments of Internal Medicine and Endocrinology and Radiology, University Hospital Fattouma Bourguiba Monastir, Monastir, Tunisia

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Hajer Marzouk Departments of Internal Medicine and Endocrinology, University Hospital Fattouma Bourguiba Monastir, Monastir, Tunisia

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Hanene Sayadi Departments of Internal Medicine and Endocrinology, University Hospital Fattouma Bourguiba Monastir, Monastir, Tunisia

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Ines Khochtali Departments of Internal Medicine and Endocrinology, University Hospital Fattouma Bourguiba Monastir, Monastir, Tunisia

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Mondher Golli Departments of Internal Medicine and Endocrinology and Radiology, University Hospital Fattouma Bourguiba Monastir, Monastir, Tunisia

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Summary

Kallmann syndrome (KS) is a form of hypogonadotropic hypogonadism in combination with a defect in sense of smell, due to abnormal migration of gonadotropin-releasing hormone-producing neurons. We report a case of a 17-year-old Tunisian male who presented with eunuchoid body proportions, absence of facial, axillary and pubic hair, micropenis and surgically corrected cryptorchidism. Associated findings included anosmia. Karyotype was 46XY and hormonal measurement hypogonadotropic hypogonadism. MRI of the brain showed bilateral agenesis of the olfactory bulbs and 3.5 mm pituitary microadenoma. Hormonal assays showed no evidence of pituitary hypersecretion.

Learning points:

  • The main clinical characteristics of KS include hypogonadotropic hypogonadism and anosmia or hyposmia.

  • MRI, as a non-irradiating technique, should be the first radiological step for investigating the pituitary gland as well as abnormalities of the ethmoid, olfactory bulbs and tracts in KS.

  • KS may include anterior pituitary hypoplasia or an empty sella syndrome. The originality of our case is that a microadenoma also may be encountered in KS. Hormonal assessment indicated the microadenoma was non-functioning. This emphasizes the importance of visualizing the pituitary region in KS patients to assess for hypoplastic pituitary malformations or adenomas.

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Ana G Ferreira Endocrinology and Diabetes Department, Garcia de Orta Hospital, Almada, Portugal

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Tiago N Silva Endocrinology and Diabetes Department, Garcia de Orta Hospital, Almada, Portugal

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Henrique V Luiz Endocrinology and Diabetes Department, Garcia de Orta Hospital, Almada, Portugal

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Filipa D Campos Hemato-Oncology Department, Garcia de Orta Hospital, Almada, Portugal

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Maria C Cordeiro Endocrinology and Diabetes Department, Garcia de Orta Hospital, Almada, Portugal

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Jorge R Portugal Endocrinology and Diabetes Department, Garcia de Orta Hospital, Almada, Portugal

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Sellar plasmacytomas are rare and the differential diagnosis with non-functioning pituitary adenomas might be difficult because of clinical and radiological resemblance. They usually present with neurological signs and intact anterior pituitary function. Some may already have or eventually progress to multiple myeloma. We describe a case associated with extensive anterior pituitary involvement, which is a rare form of presentation. A 68-year-old man was referred to our Endocrinology outpatient clinic due to gynecomastia, reduced libido and sexual impotence. Physical examination, breast ultrasound and mammography confirmed bilateral gynecomastia. Blood tests revealed slight hyperprolactinemia, low testosterone levels, low cortisol levels and central hypothyroidism. Sellar MRI showed a heterogeneous sellar mass (56 × 60 × 61 mm), initially suspected as an invasive macroadenoma. After correcting the pituitary deficits with hydrocortisone and levothyroxine, the patient underwent transsphenoidal surgery. Histological examination revealed a plasmacytoma and multiple myeloma was ruled out. The patient was unsuccessfully treated with radiation therapy (no tumor shrinkage). Myeloma ultimately developed, with several other similar lesions in different locations. The patient was started on chemotherapy, had a bone marrow transplant and is now stable (progression free) on lenalidomide and dexamethasone. The presenting symptoms and panhypopituitarism persisted, requiring chronic replacement treatment with levothyroxine, hydrocortisone and testosterone.

Learning points:

  • Plasmacytomas, although rare, are a possible type of sellar masses, which have a completely different treatment approach, so it is important to make the correct diagnosis.

  • Usually, they present with neurological signs and symptoms and a well-preserved pituitary function, but our case shows that anterior pituitary function can be severely compromised.

  • Making a more extensive evaluation (clinical and biochemical) might provide some clues to this diagnosis.

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J Bukowczan Regional Pituitary Tumour Service, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, NE1 4LP, UK

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K Lois Regional Pituitary Tumour Service, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, NE1 4LP, UK

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M Mathiopoulou Regional Pituitary Tumour Service, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, NE1 4LP, UK

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A B Grossman Oxford Centre for Diabetes, Endocrinology and Metabolism, Churchill Hospital, University of Oxford, Oxford, OX3 7LE, UK

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R A James Regional Pituitary Tumour Service, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, NE1 4LP, UK

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Summary

Giant prolactinomas are rare tumours of the pituitary, which typically exceed 40 mm in their largest dimension. Impairment of higher cognitive function has been noted post-operatively after transcranial surgery and as a long-term consequence of the radiotherapy treatment. However, there has been little that is reported on such disturbances in relation to the tumour per se, and to our knowledge, there has been none in terms of responsivity to dopamine agonist therapy and shrinkage in these tumours. We present a case of successful restoration of severely impaired cognitive functions achieved safely after significant adenoma involution with medical treatment alone.

Learning points

  • Giant prolactinomas can be present with profound cognitive defects.

  • Dopamine agonists remain in the mainstay first-line treatment of giant prolactinomas.

  • Mechanisms of the reversible cognitive impairment associated with giant prolactinoma treatment appear to be complex and remain open to further studies.

  • Young patients with giant prolactinomas mandate genetic testing towards familial predisposition.

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Avinash Suryawanshi Department of Endocrinology and Metabolism, Concord Repatriation General Hospital, Concord, New South Wales, 2139, Australia
Concord Clinical School, The University of Sydney, Sydney, New South Wales, 2139, Australia

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Timothy Middleton Department of Endocrinology and Metabolism, Concord Repatriation General Hospital, Concord, New South Wales, 2139, Australia
Concord Clinical School, The University of Sydney, Sydney, New South Wales, 2139, Australia

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Kirtan Ganda Department of Endocrinology and Metabolism, Concord Repatriation General Hospital, Concord, New South Wales, 2139, Australia
Concord Clinical School, The University of Sydney, Sydney, New South Wales, 2139, Australia

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Summary

X-linked adrenoleukodystrophy (X-ALD) is a rare genetic condition caused by mutations in the ABCD1 gene that result in accumulation of very long chain fatty acids (VLCFAs) in various tissues. This leads to demyelination in the CNS and impaired steroidogenesis in the adrenal cortex and testes. A 57-year-old gentleman was referred for the assessment of bilateral gynaecomastia of 6 months duration. He had skin hyperpigmentation since 4 years of age and spastic paraparesis for the past 15 years. Physical examination findings included generalised hyperpigmentation (including skin, buccal mucosa and palmar creases), blood pressure of 90/60 mmHg, non-tender gynaecomastia and bilateral hypoplastic testes. Lower limb findings were those of a profoundly ataxic gait associated with significant paraparesis and sensory loss. Primary adrenal insufficiency was confirmed and investigations for gynaecomastia revealed normal testosterone with mildly elevated luteinising hormone level and normal prolactin. The combination of primary adrenal insufficiency (likely childhood onset), partial testicular failure (leading to gynaecomastia) and spastic paraparesis suggested X-ALD as a unifying diagnosis. A serum VLCFA panel was consistent with X-ALD. Subsequent genetic testing confirmed the diagnosis. Treatment with replacement doses of corticosteroid resulted in improvement in blood pressure and increased energy levels. We have reported the case of a 57-year-old man with a very late diagnosis of X-ALD manifested by childhood onset of primary adrenal insufficiency followed by paraparesis and primary hypogonadism in adulthood. Thus, X-ALD should be considered as a possibility in a patient with non-autoimmune primary adrenal insufficiency and neurological abnormalities.

Learning points

  • Adult patients with X-ALD may be misdiagnosed as having multiple sclerosis or idiopathic spastic paraparesis for many years before the correct diagnosis is identified.

  • Screening for X-ALD with a VLCFA panel should be strongly considered in male children with primary adrenal insufficiency and in male adults presenting with non-autoimmune primary adrenal insufficiency.

  • Confirmation of a genetic diagnosis of X-ALD can be very useful for a patient's family as genetic testing enables detection of pre-symptomatic female heterozygotes who can then be offered pre-natal testing to avoid transmission of the disease to male offsprings.

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