Adenoma, Sweat Gland ; pathology ; Adult ; Female ; Humans ; Immunohistochemistry ; Leg ; pathology ; Skin Neoplasms ; pathology

Humans ; Leg/pathology* ; Skin Neoplasms/pathology* ; Lymphoma, Large B-Cell, Diffuse/pathology*

Edema ; pathology ; Humans ; Ischemia ; pathology ; Leg ; blood supply ; Ligation ; Male ; Popliteal Vein ; abnormalities ; pathology ; surgery ; Saphenous Vein ; pathology

A 2-year-old girl had variably-sized, relatively well demarcated, depressed brownish patches on the left shoulder, back, and both legs from the age of 1 month. The biopsy specimen from the left shoulder showed an increase in the number of normal intradermal eccrine ducts and coils, which was compatible with pure eccrine nevus. The clinical manifestation of our case, including brownish depressed patches, was unique compared to other reported cases.
Back ; Biopsy ; Case Report ; Child, Preschool ; Female ; Human ; Leg ; Nevus/pathology* ; Shoulder ; Sweat Gland Neoplasms/pathology*

Adult ; Bone Marrow ; pathology ; Female ; Humans ; Leg ; Neoplasm Invasiveness ; Rhabdomyosarcoma, Embryonal ; pathology ; therapy

Adult ; Erythromelalgia ; pathology ; Humans ; Leg ; physiopathology ; Leprosy ; diagnosis ; pathology ; Male ; Singapore

Aged ; Humans ; Leg ; Leiomyosarcoma ; pathology ; secondary ; therapy ; Male ; Thyroid Neoplasms ; pathology ; secondary ; therapy

Sarcoidosis is a rare d:sease in Korea and its association with erythema nodosurn is even rarer. Recently we saw a patient of bihilar adenopathy, who had arthralgia and erythematous nodules of both lower legs. A skin biopsy obtained from the erythematous nodule of the lower leg showed septal panniculitis, consitent with erythema nodosum, and a biopsy from the mediastinal lymph node revealed a pathology consistent with sarcoidosis. This is the first case of Lofgrens syndrome confirmed by histology ir, Korea.
Arthralgia ; Biopsy ; Erythema ; Erythema Nodosum ; Humans ; Korea ; Leg ; Lymph Nodes ; Panniculitis ; Pathology ; Sarcoidosis ; Skin

BACKGROUND AND PURPOSE: Hyperkalemic periodic paralysis (hyperKPP) is a muscle sodium-ion channelopathy characterized by recurrent paralytic attacks. A proportion of affected individuals develop fixed or chronic progressive weakness that results in significant disability. However, little is known about the pathology of hyperKPP-induced fixed weakness, including the pattern of muscle involvement. The aim of this study was to characterize the patterns of muscle involvement in hyperKPP by whole-body magnetic resonance imaging (MRI). METHODS: We performed whole-body muscle MRI in seven hyperKPP patients carrying the T704M mutation in the SCN4A skeletal sodium-channel gene. Muscle fat infiltration, suggestive of chronic progressive myopathy, was analyzed qualitatively using a grading system and was quantified by the two-point Dixon technique. RESULTS: Whole-body muscle MRI analysis revealed muscle atrophy and fatty infiltration in hyperKPP patients, especially in older individuals. Muscle involvement followed a selective pattern, primarily affecting the posterior compartment of the lower leg and anterior thigh muscles. The muscle fat fraction increased with patient age in the anterior thigh (r=0.669, p=0.009), in the deep posterior compartment of the lower leg (r=0.617, p=0.019), and in the superficial posterior compartment of the lower leg (r=0.777, p=0.001). CONCLUSIONS: Our whole-body muscle MRI findings provide evidence for chronic progressive myopathy in hyperKPP patients. The reported data suggest that a selective pattern of muscle involvement-affecting the posterior compartment of the lower leg and the anterior thigh-is characteristic of chronic progressive myopathy in hyperKPP.
Channelopathies ; Humans ; Leg ; Magnetic Resonance Imaging* ; Muscles ; Muscular Atrophy ; Muscular Diseases* ; Paralysis, Hyperkalemic Periodic* ; Pathology ; Thigh

OBJECTIVETo investigate the possible influence of the impairment of lymph fluid on the metabolism of hyaluronic acid (HA) in the lymphedematous skin tissue.

METHODSTissue fluid was collected in lymphedematous limbs and the contralateral healthy limbs of 39 patients and HA content was measured with radioimmunoassay. The protein contents were also measured.

RESULTSThe HA contents in interstitial fluid of lymphedematous limb were significantly (8 fold) higher than that of normal limb. The protein concentration in the tissue fluid did not show significant differences between lymphedema and those with normal tissue.

CONCLUSIONThe result suggests blockage of regional draining lymphatics may impairs breakdown of HA and the stagnation of HA in the limb may exert a deleterious effect on the interstitium.

Extracellular Fluid ; metabolism ; Forearm ; Humans ; Hyaluronic Acid ; metabolism ; Leg ; Lymphedema ; metabolism ; Radioimmunoassay ; Skin ; metabolism ; pathology