KAHLER’S DISEASE

Kahler’s Disease, otherwise known as Multiple myeloma, is a hematologic malignancy which is caused by the unregulated reproduction of plasma cells. These cells are responsible for protecting the body from any foreign body or organisms that may enter and cause harm to the body.

Kahler’s Disease is the multiplication of the plasma cells in the bone marrow resulting in the decrease in red blood cell production since they are outnumbered by the plasma cells. This condition then produces ineffective antibodies.

TYPES

Type I:

  • Hemoglobin level greater than 10g/dl
  • Normal calcium
  • Normal xrays with a note of a solitary plasmacyte  
  • Serum protein level < 5 g/dl 
  • Urinary light chain excretion < 4 g/24h

Type II: Neither type I or III

Type III: one or more of the following: 

  • Hemoglobin level less than 8.5 g/dl
  • Elevated calcium levels > 12 mg/dl
  • Skeletal survey – three or more lytic bone lesions
  • Serum protein levels  greater than 7 g/dl 
  • Urinary light chain excretion > 12 g/24 h

SYMPTOMS

Multiple myeloma can initially present with no or mild symptoms, and these are as follows: 

  • Back or chest pain
  • Inability to hold the food down
  • Abnormalities in defecation, irregular bowel habits
  • Early satiety, feeling of having a full stomach most of the time
  • Poor memory and concentration
  • Feeling tired most of the time
  • Recurrent infection- usually manifests as on and off low-grade fever
  • Pallor or sallow complexion
  • Decreased muscle strength especially on the lower extremities

DIAGNOSIS

Patients with multiple myeloma sometimes present with any of the following: 

  • Low red cell mass or hemoglobin resulting in the pallor of the patient
  • Elevated kidney function tests such as blood urea nitrogen and creatinine due to the accumulation of Tamm-Horsfall protein or the myeloma protein
  • Low serum globulin, which is part of the total protein serum test
  • Test for Bence Jones protein
  • Serum protein electrophoresis – detects the presence of M protein or myeloma protein
  • Complete blood count utilizing manual procedure in counting shows the presence of roleaux formation
  • Elevated ESR (erythrocyte sedimentation rate) an acute phase reactant 
  • Presence of bone lesions in imaging studies.

Three of the following criteria should be met in diagnosing multiple myeloma, and these are as follows: 

Symptomatic myeloma (all three criteria must be met):

  • Presence of plasma cells on mounts of bone marrow biopsy
  • Presence of M protein or myeloma protein in the serum or urine

Presence of organ damage as manifested by any of the following: 

  • Elevated calcium levels higher than 11mg/dl
  • Renal impairment
  • Low hemoglobin less than 10g/dl
  • Presence of punched out bone lesions on radiographic images

TREATMENT

The treatment of choice for individuals below 65 years of age is the use of chemotherapy. Medications used include bortezomib, lenalidomide with dexamethasone and stem cell transplant.

Individuals over 65 years of age with co-morbidities were found in studies that they cannot tolerate stem cell transplantation. Chemotherapeutic drugs include melphalan and prednisone, and there is an improved outcome. 

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