Diagnosis and Treatment > Signs and Symptoms > Leg pain
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Search for other papers by Anna Luiza Galeazzi Rech in
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Search for other papers by Katrin E Schimke in
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Summary
Acute Charcot neuropathic osteoarthropathy (CN) is a clinical entity which can easily go unrecognized in its acute early stages due to lack of awareness and unspecific presentation. However, missing early diagnosis can lead to severe complications. We present the case of a 72-year-old male patient who went through the natural course of the disease unnoticed before the very eyes of his physicians leading to a tragic end. We aim to raise awareness for this rare diabetic complication, emphasizing the necessity of early diagnosis and adequate, interdisciplinary treatment.
Learning points:
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Clinical signs and symptoms of acute Charcot neuropathic osteoarthropathy (CN).
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Red flags.
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Importance of early diagnosis and correct treatment.
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Diagnostic challenges of acute CN.
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Awareness of high morbidity and mortality.
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Search for other papers by J H McDermott in
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Summary
We present three cases of acute diabetic neuropathy and highlight a potentially underappreciated link between tightening of glycaemic control and acute neuropathies in patients with diabetes. Case 1: A 56-year-old male with poorly controlled type 2 diabetes (T2DM) was commenced on basal-bolus insulin. He presented 6 weeks later with a diffuse painful sensory neuropathy and postural hypotension. He was diagnosed with treatment-induced neuropathy (TIN, insulin neuritis) and obtained symptomatic relief from pregabalin. Case 2: A 67-year-old male with T2DM and chronic hyperglycaemia presented with left lower limb pain, weakness and weight loss shortly after achieving target glycaemia with oral anti-hyperglycaemics. Neurological examination and neuro-electrophysiological studies suggested diabetic lumbosacral radiculo-plexus neuropathy (DLPRN, diabetic amyotrophy). Pain and weakness resolved over time. Case 3: A 58-year-old male was admitted with blurred vision diplopia and complete ptosis of the right eye, with intact pupillary reflexes, shortly after intensification of glucose-lowering treatment with an SGLT2 inhibitor as adjunct to metformin. He was diagnosed with a pupil-sparing third nerve palsy secondary to diabetic mononeuritis which improved over time. While all three acute neuropathies have been previously well described, all are rare and require a high index of clinical suspicion as they are essentially a diagnosis of exclusion. Interestingly, all three of our cases are linked by the development of acute neuropathy following a significant improvement in glycaemic control. This phenomenon is well described in TIN, but not previously highlighted in other acute neuropathies.
Learning points:
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A link between acute tightening of glycaemic control and acute neuropathies has not been well described in literature.
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Clinicians caring for patients with diabetes who develop otherwise unexplained neurologic symptoms following a tightening of glycaemic control should consider the possibility of an acute diabetic neuropathy.
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Early recognition of these neuropathies can obviate the need for detailed and expensive investigations and allow for early institution of appropriate pain-relieving medications.
Search for other papers by Yasuhiro Oda in
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Search for other papers by Masayuki Yamanouchi in
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Search for other papers by Hiroki Mizuno in
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Search for other papers by Rikako Hiramatsu in
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Search for other papers by Tatsuya Suwabe in
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Okinaka Memorial Institute for Medical Research, Toranomon Hospital, Tokyo, Japan
Search for other papers by Junichi Hoshino in
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Search for other papers by Naoki Sawa in
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Department of Pathology, Graduate School of Medicine, Yokohama City University, Yokohama, Japan
Search for other papers by Kenichi Ohashi in
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Search for other papers by Takeshi Fujii in
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Okinaka Memorial Institute for Medical Research, Toranomon Hospital, Tokyo, Japan
Search for other papers by Yoshifumi Ubara in
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Summary
We report the renal histology of a 66-year-old man with hypertension, cardiovascular disease, and a 30-year history of type 2 diabetes mellitus with proliferative diabetic retinopathy, diabetic neuropathy, and diabetic foot status post toe amputation. Urinary protein excretion was 1.4 g/gCr, serum creatinine level 0.86 mg/dL, estimated glomerular filtration rate 69 mL/min/1.73 m2, and HbA1c 13–15%, despite using insulin. Light microscopy showed global glomerulosclerosis in 37% of the glomeruli, but the remaining glomeruli were intact. Significant polar vasculosis was present, while arteriolar sclerosis was mild. Electron microscopy revealed a thickened glomerular basement membrane, which is compatible with the early stage of diabetic glomerulopathy. The presented case was unique because glomerular changes seen typically in diabetes were not seen in the patient, despite the long-standing history of diabetes and diabetic comorbidities, while prominent polar vasculosis was found. Polar vascular formation helps preserve the glomeruli by allowing hyperosmotic blood bypass the glomeruli; this decreases intraglomerular pressure and minimizes glomerular endothelial damage.
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A 66-year-old man with a 30-year history of type 2 diabetes mellitus with poor glycemic control underwent renal biopsy, which showed scarce glomerular changes typically seen in diabetic kidney disease and instead revealed significant polar vasculosis.
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Past studies demonstrated that the increased small vessels around the vascular hilus in diabetic patients originated from the afferent arterioles and drained into the peritubular capillaries.
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Polar vascular formation may preserve glomerular function by allowing the blood flow to bypass the glomeruli and decreasing the intraglomerular pressure, which minimizes endothelial damage of the glomerular tufts.
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Search for other papers by Ana Agapito in
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Summary
POEMS syndrome (Polyneuropathy, Organomegaly, Endocrinopathy, Monoclonal protein and Skin changes) is a rare multisystemic disease. Clinical presentation is variable, the only mandatory criteria being polyneuropathy and monoclonal gammapathy in association with one major and one minor criterion. Primary adrenal insufficiency is rarely reported. We describe a case of a 33-year-old patient, in whom the presenting symptoms were mandibular mass, chronic sensory-motor peripheral polyneuropathy and adrenal insufficiency. The laboratory evaluation revealed thrombocytosis, severe hyperkalemia with normal renal function, normal protein electrophoresis and negative serum immunofixation for monoclonal protein. Endocrinologic laboratory work-up confirmed Addison’s disease and revealed subclinical primary hypothyroidism. Thoracic abdominal CT showed hepatosplenomegaly, multiple sclerotic lesions in thoracic vertebra and ribs. The histopathologic examination of the mandibular mass was nondiagnostic. Bone marrow biopsy revealed plasma cell dyscrasia and confirmed POEMS syndrome. Axillary lymphadenopathy biopsy: Castleman’s disease. Gluco-mineralocorticoid substitution and levothyroxine therapy were started with clinical improvement. Autologous hematopoietic cell transplantation (HCT) was planned, cyclophosphamide induction was started. Meanwhile the patient suffered two ischemic strokes which resulted in aphasia and hemiparesis. Cerebral angiography revealed vascular lesions compatible with vasculitis and stenosis of two cerebral arteries. The patient deceased 14 months after the diagnosis. The young age at presentation, multiplicity of manifestations and difficulties in investigation along with the absence of serum monoclonal protein made the diagnosis challenging. We report this case to highlight the need to consider POEMS syndrome in differential diagnosis of peripheral neuropathy in association with endocrine abnormalities even in young patients.
Learning points:
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POEMS syndrome is considered a ‘low tumor burden disease’ and the monoclonal protein in 15% of cases is not found by immunofixation.
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Neuropathy is the dominant characteristic of POEMS syndrome and it is peripheral, ascending, symmetric and affecting both sensation and motor function.
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Endocrinopathies are a frequent feature of POEMS syndrome, but the cause is unknown.
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The most common endocrinopathies are hypogonadism, primary hypothyroidism and abnormalities in glucose metabolism.
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There is no standard therapy; however, patients with disseminated bone marrow involvement are treated with chemotherapy with or without HCT.
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Summary
Necrobiosis lipoidica diabeticorum (NLD) is a chronic granulomatous dermatitis generally involving the anterior aspect of the shin, that arises in 0.3–1.2% of patients with diabetes mellitus (1). The lesions are often yellow or brown with telangiectatic plaque, a central area of atrophy and raised violaceous borders (2). Similar to other conditions with a high risk of scarring including burns, stasis ulcers and lupus vulgaris, NLD provides a favourable environment for squamous cell carcinoma (SCC) formation (3). A number of cases of SCC from NLD have been recorded (3, 4, 5); however, our search of the literature failed to identify any cases of either metastatic or fatal SCC which developed within an area of NLD. This article describes a patient with established type 1 diabetes mellitus who died from SCC which developed from an area of NLD present for over 10 years. Currently, there are a paucity of recommendations in the medical literature for screening people with NLD for the early diagnosis of SCC. We believe that clinicians should regard non-healing ulcers in the setting of NLD with a high index of clinical suspicion for SCC, and an early biopsy of such lesions should be recommended.
Learning points:
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Non-healing, recalcitrant ulcers arising from necrobiosis lipoidica diabeticorum, which fail to heal by conservative measures, should be regarded with a high index of clinical suspicion for malignancy.
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If squamous cell carcinoma is suspected, a biopsy should be performed as soon as possible to prevent metastatic spread, amputation or even death.
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Our literature search failed to reveal specific recommendations for screening and follow-up of non-healing recalcitrant ulcers in the setting of necrobiosis lipoidica diabeticorum.
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Further research is required in this field.
Search for other papers by Maria P Yavropoulou in
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Search for other papers by Christos Poulios in
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Search for other papers by Christoforos Foroulis in
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Summary
Tumor-induced osteomalacia (TIO) is a rare form of hypophosphatemia usually caused by phosphaturic mesenchymal tumors (PMTs); the biologic behavior of PMTs is under investigation. Herein we present a case of TIO with a protracted course over 12 years leading to a fatal outcome. A 39-year-old man presented with weakness in 2004 and was found to have decreased serum phosphorus, phosphaturia and low levels of 1,25-dihydroxyvitamin D3. Four years later he developed a painful left calf mass. The lesion was resected, but recurred causing extreme pain and dysfunction. Radiological examination showed a large cluster of soft tissue tumors affecting all the muscle compartments of the calf and a smaller lesion inside the metaphysis of the tibia. Above-knee amputation was performed. Histological examination of all lesions showed a cellular spindle cell neoplasm with variously sized vessels, wide vessel-like spaces and scattered deposits of calcified extracellular material. The tumor infiltrated skeletal muscles, subcutaneous fat and the proximal end of the fibula. The tibial lesion had identical histology. Three years after the amputation the patient presented with cough and dyspnea. Radiological examination, followed by an open biopsy, showed that there were multiple metastatic nodules of PMTs in both lungs. Shortly after the diagnosis the patient died. This case illustrates that even benign cases of PMTs may lead to a fatal outcome and the classification of PMTs into benign and malignant should be reassessed in order to correspond to its biological behavior.
Learning points:
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PMTs, aside from having locally aggressive behavior, may metastasize and cause death
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PMTs may behave aggressively despite ‘benign’ histological findings
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Accurate diagnosis of tumor-induced osteomalacia and patient management require a multidisciplinary approach
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Search for other papers by Christoph Henzen in
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Australian and New Zealand Intensive Care Research Centre, School of Public Health and Preventive Medicine, Monash University, Prahran, Australia
Search for other papers by Luca Cioccari in
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Summary
The combination of hyperosmolar hyperglycaemic state and central diabetes insipidus is unusual and poses unique diagnostic and therapeutic challenges for clinicians. In a patient with diabetes mellitus presenting with polyuria and polydipsia, poor glycaemic control is usually the first aetiology that is considered, and achieving glycaemic control remains the first course of action. However, severe hypernatraemia, hyperglycaemia and discordance between urine-specific gravity and urine osmolality suggest concurrent symptomatic diabetes insipidus. We report a rare case of concurrent manifestation of hyperosmolar hyperglycaemic state and central diabetes insipidus in a patient with a history of craniopharyngioma.
Learning points:
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In patients with diabetes mellitus presenting with polyuria and polydipsia, poor glycaemic control is usually the first aetiology to be considered.
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However, a history of craniopharyngioma, severe hypernatraemia, hyperglycaemia and discordance between urine-specific gravity and osmolality provide evidence of concurrent diabetes insipidus.
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Therefore, if a patient with diabetes mellitus presents with severe hypernatraemia, hyperglycaemia, a low or low normal urinary-specific gravity and worsening polyuria despite correction of hyperglycaemia, concurrent diabetes insipidus should be sought.
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Summary
Early-onset acromegaly causing gigantism is often associated with aryl-hydrocarbon-interacting receptor protein (AIP) mutation, especially if there is a positive family history. A15y male presented with tiredness and visual problems. He was 201 cm tall with a span of 217 cm. He had typical facial features of acromegaly, elevated IGF-1, secondary hypogonadism and a large macroadenoma. His paternal aunt had a history of acromegaly presenting at the age of 35 years. Following transsphenoidal surgery, his IGF-1 normalized and clinical symptoms improved. He was found to have a novel AIP mutation destroying the stop codon c.991T>C; p.*331R. Unexpectedly, his father and paternal aunt were negative for this mutation while his mother and older sister were unaffected carriers, suggesting that his aunt represents a phenocopy.
Learning points:
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Typical presentation for a patient with AIP mutation with excess growth and eunuchoid proportions.
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Unusual, previously not described AIP variant with loss of the stop codon.
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Phenocopy may occur in families with a disease-causing germline mutation.
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Search for other papers by Enzo Bonora in
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Summary
The incidences of type 2 diabetes mellitus and many cancers are rapidly increasing worldwide. Diabetes is a strong risk factor for some cancers (including lymphomas) and is also associated with adverse cancer outcomes. After gastrointestinal tract, the skin is the second most frequent extranodal site involved by non-Hodgkin lymphomas and the cutaneous B-cell lymphomas (CBCLs) range from 25% to 30% of all primary cutaneous lymphomas. The primary cutaneous diffuse large B-cell lymphoma (PCDLBCL) is an aggressive lymphoma with a poor prognosis, representing roughly 20% of all primary CBCLs. Classically, the cutaneous manifestation of this lymphoma is a red or violaceous tumors arising on a leg. To date, despite the large body of evidence suggesting that diabetes is strongly associated with an increased risk of some cancers, very little information is available regarding a possible association between type 2 diabetes and primary cutaneous diffuse large B-cell lymphoma. In this report, we will present the case of a white adult patient with type 2 diabetes with chronic leg ulcers complicated by a primary cutaneous diffuse large B-cell lymphoma.
Learning points:
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Diabetes mellitus is increasing worldwide as well as the incidence of many cancers.
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Diabetes mellitus is a powerful risk factor for some cancers (including lymphomas) and is strongly associated with adverse cancer outcomes.
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Seen that diabetes is strongly associated with an increased risk of cancers (including cutaneous lymphomas), clinicians should always keep in mind this complication in elderly patients with type 2 diabetes, even in a chronic leg ulcer with hypertrophy of the wound edge, which is hard to heal and does not have the typical characteristics of a diabetic or vascular ulcer. In these cases, a biopsy should be performed to rule out a neoplasm.
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Early diagnosis and correct management of cancer in a patient with type 2 diabetes are crucial to improve clinical outcomes.
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Faculdades São José, Rio de Janeiro, Brazil
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Search for other papers by Leonardo Vieira Neto in
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Summary
Osteopetrosis (OP) comprehends a rare group of conditions, presenting on radiographs increased bone density, deriving from irregularities in osteoclast differentiation or function. In the autosomal dominant osteopetrosis (ADO), some patients stay asymptomatic for some time, or only develop mild symptoms. The dental surgeon is often the first to presuppose the disease during routine imaging examinations, referring the patient to a specialized medical group. Furthermore, osteomyelitis is one of the major OP complications, and should be refrained through frequent dental monitoring. Signals of cortical interruption, sclerotic sequestra or periosteal new bone formation, should be looked for in these patients. Their dental management is complex and procedures encompassing bone tissue, such as implant procedures, tissue regenerations, tooth extractions, maxillofacial surgeries and orthodontic treatments, when elected, should be avoided. This case report describes a case of ADO with a diagnosis of moderate generalized chronic periodontitis, not statistically related to plaque index. This is the first case to describe such a condition, in which the systemic component and the altered bone metabolism seem to be related to the loss of periodontal apparatus, independent of the biofilm. Concerning prevention, we can reinforce the need for frequent dental monitoring to avoid further interventions in those cases.
Learning points:
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This paper reports a case in which the systemic component and the altered bone metabolism seem to have been related to the loss of periodontal attachment apparatus, independent of the biofilm.
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The periodontal damage observed in the OP patient was not related to the dental plaque, which leads us to suggest that the cases of periodontitis in OP patients should be diagnosed as periodontitis as a manifestation of systemic diseases.
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The periodontitis prevention should be longed for in OP patients thus, we propose that doctors responsible for patients with OP refer them to a dental service as soon as possible and that dentists should be aware of the preventive dentistry value as well as the most appropriate dental management for those cases.
