Presentation of multiple painful subcutaneous nodules: Dercum's disease, a rare variant of lipoma

A woman in her 50s presented to her general practitioner (GP) with an 8-month history of multiple painful subcutaneous nodules of various sizes in her trunk and limbs. Her previous GP made the clinical diagnosis of lipoma when they presented as non-painful nodules 2 years ago. Initial ultrasound demonstrated multiple lipomata with the largest size in the left upper thighs displaying features of subtle internal vascularity, entirely contained within the subcutaneous layer. MRI scan of thigh lesions showed multiple angiolipomas consistent with the entity of Dercum's disease. Subsequent biopsy histology confirmed the image diagnosis of angiolipoma. She was referred to a musculoskeletal oncological surgeon for evaluation and reassurance regarding optimising medical management of her associated obesity. Her angiolipoma and obesity are well managed by her GP. This case highlights the diagnostic workup of a rare variant of lipoma, Dercum's disease. The differential diagnosis of multiple painful lipomas was reviewed and discussed, consequently leading to the discussion of managing the associated obesity in this case.

Incidental Adiposis Dolorosa (Dercum's Disease) Detected on 18 F-DCFPyL PET/CT

ABSTRACT

A 64-year-old man with recently diagnosed prostate adenocarcinoma and Gleason score 4 + 3 = 7 with a mildly elevated prostate-specific antigen of 5.17 μg/L was referred for 18 F-DCFPyL PET/CT for primary staging. The scan demonstrated incidental innumerable moderately avid subcutaneous nodules due to adiposis dolorosa (Dercum's disease), which is a rare adipose tissue disease.

JUXTA-ARTICULAR ADIPOSIS DOLOROSA IN LIPEDEMA PATIENTS

Both lipedema and juxta-articular adiposis dolorsa are painful disorders of subcutaneous adipose tissue. We investigated 297 female patients with lipedema treated at our department for the presence of juxta-articular adiposis dolorsa. Occurrence of both disorders was identified in 4.4% of lipedema patients. The common presence of both disorders was observed only in more advanced lipedema (grade II and III). Juxta-articular adiposis dolorosa of the knees is seen exclusively on the inner knees, and it presents neither bruising nor creases or hypothermia. Choices of surgical treatment are either microcannula liposuction or dermolipectomy. Recurrences have not been observed.

[Dercum's disease]

Dercum's disease is a rare disease, which mainly affects women and has an unknown prevalence and aetiology. The disease is characterised by generalised obesity and more than three-month painful subcutaneous adipose tissue not responding to usual pain treatment. A suggested classi-fication of the disease includes four types: generalised diffuse, generalised nodular, localised nodular and juxta-articular. Diagnosis is one of exclusion, and treatment includes medical and surgical options with the aim of pain palliation and increased mobility and function.

Review of Dercum's disease and proposal of diagnostic criteria, diagnostic methods, classification and management

DEFINITION AND CLINICAL PICTURE: We propose the minimal definition of Dercum's disease to be generalised overweight or obesity in combination with painful adipose tissue. The associated symptoms in Dercum's disease include fatty deposits, easy bruisability, sleep disturbances, impaired memory, depression, difficulty concentrating, anxiety, rapid heartbeat, shortness of breath, diabetes, bloating, constipation, fatigue, weakness and joint aches.

CLASSIFICATION

We suggest that Dercum's disease is classified into: I. Generalised diffuse form A form with diffusely widespread painful adipose tissue without clear lipomas, II. Generalised nodular form - a form with general pain in adipose tissue and intense pain in and around multiple lipomas, and III. Localised nodular form - a form with pain in and around multiple lipomas IV. Juxtaarticular form - a form with solitary deposits of excess fat for example at the medial aspect of the knee.

EPIDEMIOLOGY

Dercum's disease most commonly appears between the ages of 35 and 50 years and is five to thirty times more common in women than in men. The prevalence of Dercum's disease has not yet been exactly established.

AETIOLOGY

Proposed, but unconfirmed aetiologies include: nervous system dysfunction, mechanical pressure on nerves, adipose tissue dysfunction and trauma. DIAGNOSIS AND DIAGNOSTIC METHODS: Diagnosis is based on clinical criteria and should be made by systematic physical examination and thorough exclusion of differential diagnoses. Advisably, the diagnosis should be made by a physician with a broad experience of patients with painful conditions and knowledge of family medicine, internal medicine or pain management. The diagnosis should only be made when the differential diagnoses have been excluded.

DIFFERENTIAL DIAGNOSIS

Differential diagnoses include: fibromyalgia, lipoedema, panniculitis, endocrine disorders, primary psychiatric disorders, multiple symmetric lipomatosis, familial multiple lipomatosis, and adipose tissue tumours. GENETIC COUNSELLING: The majority of the cases of Dercum's disease occur sporadically. A to G mutation at position A8344 of mitochondrial DNA cannot be detected in patients with Dercum's disease. HLA (human leukocyte antigen) typing has not revealed any correlation between typical antigens and the presence of the condition. MANAGEMENT AND TREATMENT: The following treatments have lead to some pain reduction in patients with Dercum's disease: Liposuction, analgesics, lidocaine, methotrexate and infliximab, interferon α-2b, corticosteroids, calcium-channel modulators and rapid cycling hypobaric pressure. As none of the treatments have led to long lasting complete pain reduction and revolutionary results, we propose that Dercum's disease should be treated in multidisciplinary teams specialised in chronic pain.

PROGNOSIS

The pain in Dercum's disease seems to be relatively constant over time.

Adiposis dolorosa of scalp presenting with severe headache: an unusual case

A 46-year-old female, known case of adiposis dolorosa since adolescence, noticed painful thickening of scalp in bilateral parieto-occipital areas and vertex 1 year back. Six weeks prior to the presentation to our service, she developed severe occipital headache refractory to drug treatment. She improved after bilateral greater occipital nerve blocks. She was subjected to bilateral greater occipital chemical neurolysis which has given her complete pain relief.

[An uncommon cause of recurrent abdominal pain in a 63-year-old obese woman]

HISTORY AND CLINICAL FINDINGS

A 63-year-old woman was admitted because of abdominal pain for 12 months, associated with an increasing abdominal distension. One month before a gastroscopy had revealed mild gastritis. The taking of proton pump inhibitors did not improve her symptoms. There was no relevant neurological or psychiatric past history.

INVESTIGATIONS

Ultrasound and laboratory tests demonstrated a fatty liver and increased serum levels of lipoproteins. Magnetic resonance imaging revealed an increase in subcutaneous and intraperitoneal adipose tissue. Endoscopy did not show any additional significant findings.

DIAGNOSIS AND TREATMENT

The patient had adiposis dolorosa. Initially she was given daily a combination of mexiletine 400 mg and 75 mg Amitriptyline. After a few days the ailment decreased and had disappeared completely after one week. Three months later the dosage was reduced to 100 mg mexiletine and 25 mg Amitriptyline daily. After another two months all medication was discontinued. At follow-up after 12 months the symptoms had not recurred.

CONCLUSION

This case demonstrates that abdominal pain is not always caused by diseases of the visceral hollow organs. It must also be borne in mind that abdominal pain may be associated with adipose tissue, as is the case in adiposis dolorosa. The disease can be successfully treated, as in this case, using a combination of mexiletine and Amitriptyline.

[Dercum's disease: a case report]

A case of Dercum's disease in a 51-year-old obese woman with a history of brain vasculitis, and painful subcutaneous multiple lipomas is described. This disease, included in the category of rare diseases by the World Health Organization, first described in 1892 by Francis Xavier Dercum, is characterized by its prevalence among women, its familiarity, by the presence of multiple painful subcutaneous lipomas and its association with obesity, hypercholesterolemia and asthenia. The disease has to be differentiated from Madelung syndrome, the multiple familiar lipomatosis and Proteus' syndrome. The quality of life of the patients is often poor and since treatments so far have not been conclusive a better knowledge of the pathogenesis of the disease is desirable.

Dercum's disease

Dercum's disease (adiposis dolorosa, lipomatosis dolorosa morbus Dercum), is a rare disorder resulting in painful fatty deposits around the upper legs, trunk, and upper arms. The portrait painted of Dercum's disease is very complicated, with many other disorders seen associated with the disease. There are no clear pathological mechanisms known, although it is suspected that there is either a metabolic or autoimmune component involved. Here, the authors review the literature to date, including some information from their own studies. In particular, the authors will look at the different strands of evidence pointing to the pathological mechanism of the disorder.

Dercum’s disease (adiposis dolorosa): a new case-report

Dercum's disease, or adiposa dolorosa, is a rare condition characterized by the development of multiple painful subcutaneous lipomas. Postmenopausal women are selectively affected. The ankle area is an uncommon site of involvement. We report a case with lipomas about the ankle, and we review the relevant literature.

CASE-REPORT

This 46-year-old perimenopausal woman receiving follow-up for depression presented in December 1997 for swelling and mechanical pain in the right ankle. Lumps behind and under the malleoli were removed surgically and found to have the typical histological features of lipomas. In January 2000, a lump developed behind and under the malleoli of the left ankle, and the lumps on the right recurred. The physical examination showed obesity, with a body mass index of 32.04 kg/m(2). Firm, mobile, painless lumps were felt under and behind the malleoli on both sides. The ankles were painful, although range of motion was normal. Examination of the back found two similar lumps. The erythrocyte sedimentation rate was 10 mm/h and the C-reactive protein level was 6 mg/l. Serum lipid levels were normal. Findings were normal from plain radiographs of the ankles. Ultrasound scanning of the ankles confirmed that the lumps were composed of adipose tissue. Magnetic resonance imaging visualized an arc-shaped lipomatous mass on the left. Whole-body bone density measurement found an increase in fat mass of the lower limbs with normal bone mass. The ankle lipomas were removed surgically. At last follow-up 18 months later, she was free of recurrence.

DISCUSSION

Dercum's disease is a rare condition of unknown etiology characterized by multiple, often painful lipomas. Paresthesia in the overlying skin is common. Lipomas about the joints cause mechanical arthralgia. The diagnosis, which is often delayed, rests on ultrasonography and, above all, magnetic resonance imaging. A combination of medications, surgery, and psychiatric care is usually needed. The treatment aims at relieving the pain and restoring a normal appearance.

[Lipomatosis dolorosa--a frequently overlooked disease picture]

Dercum's disease (lipomatosis dolorosa) is a relatively unknown illness. The disorder usually affects middle-aged females. Subcutaneous fatty tissue deposits may occur in many parts of the body. The upper arms, elbows, stomach wall, buttocks, thighs, or knees are most commonly affected. Severe hyperalgesia is found on light pressure and touch. Analgesics or pain-modulating drugs usually have little or no effect. The following case report demonstrates successful symptomatic treatment of the otherwise nearly unbearable complaints: intravenous infusions of 5 mg/kg body weight of lidocaine over 30-90 min may give pain relief lasting several weeks or even months. Alternatively, patients are treated with 150-750 mg orally administered mexiletine daily. Surgical excision or liposuction of these fatty tissue deposits have shown significant reduction of pain. However, this effect reduces over time and recurrences often develop.

[Painful lipoma?]

The adiposis dolorosa (Dercum's disease) was described already in 1892. Many questions about its physiopathological mechanism are still unresolved. Presentation of a patient with this disease is reported, followed by a brief review of the literature, where the pathogenesis, the differential diagnosis and the therapeutical approaches of this syndrome are especially pointed out.

Dercum's disease (adiposis dolorosa)

Dercum's disease (adiposis dolorosa) is a rare condition characterized by progressively painful fatty deposits, usually, in menopausal women with obesity, asthenia and mental phenomena. We report a case of a 48-year-old woman with recurrent neck swelling and pain in the neck and parotid region, and a review of management of this uncommon problem.

[A case of adiposis dolorosa--Dercum's disease]

Adiposis dolorosa or Dercum's disease consists of a painful progressive localized state of obesity with four cardinal symptoms: a) painful circumscribed or diffuse fatty deposits, b) generalized obesity in women usually of menopausal age, c) asthenia, weakness and frequently tendency to fatigue and d) mental phenomena including emotional instability, depression, epilepsy, mental confusion and true dementia. Only a few cases in men have been described. The pain may be treated with intravenous administration of lignocaine or oral mexitil while no causal treatment is known. An illustrative case is reported.

Dercum's disease (adiposis dolorosa). A case report and review of the literature

Dercum's disease consists of multiple, painful lipomata and occurs in obese, postmenopausal women. A 52-year-old obese woman complained of multiple painful "lumps" in the extremities. The diagnosis of Dercum's disease (adiposis dolorosa) was established by excisional biopsy of four tumors. There is no effective treatment for this condition. Surgical excision, in this case, relieved the patient's symptoms locally, but after one year the painful lipomata had appeared at other sites. Case reports of this condition were not found in a review of the orthopedic literature.

Superficial abscess formation: an unusual presenting feature of tuberculosis

Tuberculous abscess formation in the absence of underlying osteo-articular, tendon-sheath, or lymphnode infection is uncommon in this country, but is likely to become more important with increasing immigration. Details are reported of 32 patients notified to the City of Birmingham Public Health Department between January, 1964, and December, 1968. The disease was encountered mainly in immigrants attending casualty and surgical out-patient departments.

The presenting feature in all cases was a superficial, fluctuant, relatively painless swelling of several weeks' duration. Lesions were widespread although there was a tendency for the chest wall to be involved (15 patients). Chest radiographs showed evidence of pulmonary disease in approximately one-third of the case and an elevated erthroyte sedimentation rate with a normal white-cell count were constant findings. Prompt chemotherapy combined with either aspiration or incision and primary suture achieved rapid and complete resolution in nearly all patients. Incision without closure was inevitably followed by sinus formation and delay in healing.